CN101083816B - A wireless terminal and its interlocking and unlocking method with a subscriber identification card - Google Patents

Abstract

The invention discloses a wireless terminal and a method for interlocking and unlocking the wireless terminal and a user identification card; the wireless terminal comprises an interlocking judgment module and an interlocking execution module; the interlocking method comprises the following steps: after the wireless terminal is started, if the wireless terminal and the user identification card are judged to be in the interlocking state, the wireless terminal generates a random number, and the random number is written into the user identification card as a new personal identification code and is stored in the wireless terminal. The unlocking of the wireless terminal comprises: generating an unlocking code and inputting the unlocking code into the wireless terminal; if the wireless terminal judges that the unlocking code is correct, the wireless terminal enters a non-interlocking state; the unlocking of the subscriber identity card comprises: the personal identification code of the subscriber identification card is changed. The invention realizes the function of the automatic interlocking of the machine card in the real sense, and the wireless terminal and the user identification card are independent during unlocking, thereby having high unlocking freedom degree and effectively avoiding the defect that the unlocking mode of other machine card interlocking methods is not flexible after interlocking.

Description

A wireless terminal and its interlocking and unlocking method with a subscriber identification card

technical field

The invention relates to a wireless terminal, in particular to a wireless terminal and a method for interlocking and unlocking the wireless terminal and a user identification card.

Background technique

At present, more and more operators are launching low-cost wireless terminals, and some new marketing methods have emerged, such as free mobile phones with pre-stored credit. In order to ensure that users use the network within a fixed period of time, thereby recovering the cost, the method of "machine-card interlocking" can be used to achieve this purpose. The fixed wireless terminal and the user identification card are locked. After locking, the wireless terminal Only the corresponding user identification card can be used, and then the corresponding unlocking operation can be performed.

At present, the way to achieve machine-card interlocking is that a wireless terminal is locked corresponding to a user identification card. After locking, the wireless terminal can only use the corresponding user identification card. When unlocking, this user identification card needs to be inserted into the corresponding user identification card. Unlock operation on this wireless terminal. There are two disadvantages of this method: one is that the user identification card needs to be inserted into the wireless terminal before the machine-card interlock operation, that is to say, the corresponding user must be prepared when the machine-card interlock operation is to be performed on the wireless terminal. Identification card; the second is to insert the corresponding user identification card when interlocking in the wireless terminal when unlocking, if the user identification card cannot be obtained, the wireless terminal cannot be unlocked. Therefore, the realization process of machine-card interlocking and unlocking is more complicated.

Contents of the invention

The technical problem to be solved by the present invention is to provide a wireless terminal and a method for interlocking and unlocking the wireless terminal and the user identification card, so that the realization process of the interlocking and unlocking of the machine card is simple and easy, and can reduce the interlocking and unlocking time between the terminal and the user. Recognize card interdependencies for greater flexibility.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A method for interlocking a wireless terminal and a subscriber identification card, comprising:

A. After the wireless terminal is turned on, if both the wireless terminal and the subscriber identification card are in a state capable of interlocking, proceed to step B;

B. The wireless terminal generates a random number, and writes the random number as a new personal identification code (ie PIN code) into the subscriber identification card, and stores it in the wireless terminal.

Further, the step A specifically includes:

After the wireless terminal is turned on, if the machine-card interlock flag in the wireless terminal is in the enable state, and there is a user identification card in the wireless terminal that is in the state of personal identification code prohibition and the wireless terminal can be modified, then proceed to step B;

The step B also includes: changing the user identification card into the enabled state of the personal identification code.

Further, said step A also includes:

If the machine-card interlock flag in the wireless terminal is enabled, and there is a user identification card in the state of personal identification code prohibited in the wireless terminal, but the wireless terminal cannot modify the card, the wireless terminal will shut down or cannot enter normally. working status;

If the machine-card interlock flag in the wireless terminal is enabled, and there is a user identification card in the enabled state of the personal identification code in the wireless terminal, then take out the personal identification code in the user identification card and the information stored in the wireless terminal. If they are the same, the wireless terminal will be started normally; if they are not the same, the wireless terminal will enter the state of not working normally or shut down directly.

The present invention also provides a method for interlocking and unlocking a wireless terminal and a subscriber identification card, wherein

An interlock consists of the following steps:

A. After the wireless terminal is turned on, if both the wireless terminal and the subscriber identification card are in the state of interlocking, proceed to step B;

B, the wireless terminal generates a random number, and writes this random number into the subscriber identification card as a new personal identification code, and saves it in the wireless terminal;

Unlocking includes the unlocking of the wireless terminal and the unlocking of the subscriber identification card;

The unlocking of the wireless terminal includes:

a1. Generate an unlock code and input it into the wireless terminal;

a2. If the wireless terminal judges that the unlock code is correct, proceed to a3;

a3. The wireless terminal enters the non-interlock state;

The unlocking of the user identification card includes: changing the personal identification code of the user identification card.

Further, the step A specifically includes:

After the wireless terminal is turned on, if the machine-card interlock flag in the wireless terminal is enabled and there is a user identification card in the wireless terminal that is in a state of personal identification code prohibition and that can be modified by the wireless terminal, then proceed to step B;

The step B also includes: changing the user identification card into the enabled state of the personal identification code.

Further, said step A also includes:

If the machine-card interlock flag in the wireless terminal is enabled, and there is a user identification card in the state of personal identification code prohibited in the wireless terminal, but the wireless terminal cannot modify the card, the wireless terminal will shut down or cannot enter normally. working status;

If there is a user identification card in the wireless terminal and the user identification card is in the PIN enabled state, then take out the PIN in the user identification card and compare it with the PIN stored in the wireless terminal, and if they are the same, start normally wireless terminal; if not the same, the wireless terminal enters the state of not working properly or shuts down directly.

Further, the step a1 specifically includes: generating an unlock code according to the fixed identification of the wireless terminal itself and an algorithm for generating a password;

The step a2 specifically includes: the wireless terminal generates a verification code with a password generation algorithm according to its own fixed identification, if the input unlock code is the same as the verification code, then it is considered that the unlock code is correct, and step a3 is performed; The identification according to and the password generation algorithm adopted are the same as those in step a1.

The present invention also provides a wireless terminal capable of interlocking with a subscriber identification card, characterized in that it includes an interlock judging module and an interlock executing module;

The interlock judging module is used to judge whether the wireless terminal and the subscriber identification card placed therein are in a state capable of interlocking after the wireless terminal is turned on, and if so, send an interlock execution command to the interlock execution module;

The interlock execution module is used to generate a random number after receiving the interlock execution instruction, and write this random number as a new personal identification code into the user identification card, and write the random number as a new personal identification code. The random number of the code is stored in the wireless terminal.

Further, the wireless terminal being in a state capable of interlocking refers to: the machine-card interlocking flag of the wireless terminal is in an enabled state;

The interlocking status of the subscriber identification card means that the subscriber identification card is in a PIN code prohibited status and the wireless terminal can be modified.

The interlock execution module is also used to change the user identification card into the PIN enabled state after receiving the interlock execution instruction.

Further, the interlock judging module is also used to notify the wireless terminal that the interlock state of the wireless terminal has been activated and the subscriber identification card is in the PIN code prohibited state but the wireless terminal cannot modify the card to enter the state of not working normally. Or simply shut down.

Further, the wireless terminal further includes: an interlock matching module;

The interlock judging module is also used to judge whether the machine-card interlock flag in the wireless terminal is in an enabled state after the wireless terminal is turned on, and there is a user identification card in a personal identification code enabled state in the wireless terminal; If yes, an interlock matching command is sent to the interlock matching module;

The interlock matching module is used to take out the PIN code in the user identification card after receiving the interlock matching instruction and compare it with the random number stored in the wireless terminal as a personal identification code, and if the same, notify the wireless terminal to start normally ; If not the same, then notify the wireless terminal to enter the state of not working properly or shut down directly.

Further, the wireless terminal also includes: an unlocking module;

The unlocking module is used to receive the unlock code of the input wireless terminal, and judge whether the unlock code is correct, and if it is correct, clear the machine-card interlock flag of the wireless terminal.

The interlocking method in the present invention solves the shortcomings of the above-mentioned machine-card interlocking method well, and makes the whole machine-card interlocking process more flexible and convenient. When activated, when the wireless terminal satisfies the two conditions of having a subscriber identification card in the "PIN code forbidden state" and restarting the wireless terminal, this function can be automatically enabled. The advantage of this design is that the operator does not need to consider whether there is a user identification card inserted in the wireless terminal when setting the machine-card interlock before selling the wireless terminal. The function of locking the card is automatically activated when the user inserts the card for the first time. It can be enabled, and there is no special restriction on the subscriber identification card to be locked before the automatic interlocking function of the wireless terminal is enabled, that is to say, any subscriber identification card can be used. So this realizes the "automatic" interlocking function of the machine card in a real sense. In the present invention, the unlocking method of the wireless terminal or the user identification card is relatively flexible, and the method is not unique. When unlocking, the wireless terminal and the user identification card are independent, and a separate unlocking can be realized, that is to say, the wireless terminal or the user can be unlocked only Therefore, this method has a high degree of freedom in unlocking, and effectively avoids the disadvantage of inflexible unlocking methods after interlocking in other machine-card interlocking methods.

Description of drawings

Fig. 1 is the specific implementation flowchart of the method for interlocking the wireless terminal and the subscriber identification card of the present invention;

Fig. 2 is the specific implementation flow chart of the phone start-up of the wireless terminal and the subscriber identification card interlocking method of the present invention;

Fig. 3 is a specific implementation flowchart of the wireless terminal unlocking method of the present invention;

Fig. 4 is a specific implementation flow chart of the subscriber identification card unlocking method of the present invention;

FIG. 5 is a schematic block diagram of a specific implementation structure of a wireless terminal according to the present invention.

Detailed ways

The technical solution of the present invention will be described in more detail below with reference to the drawings and embodiments.

The invention provides a method for interlocking a wireless terminal and a user identification card, and an unlocking method. The basic idea of the present invention is: first add the processing code of the machine-card interlocking in the wireless terminal and set the machine-card interlocking flag; when interlocking is required, input information through the keyboard, or through the Software, or operate the wireless terminal through the CDMA (Code Division Multiple Access) air interface, etc., so that the wireless terminal enters the interlock state, as long as there is a user identification card in the wireless terminal when it is started next time, and this user If the identification card is in the "PIN (Personal Identification Number) Code Prohibited State", then the wireless terminal and the user identification card will be interlocked; , the PIN code of the subscriber identification card must also be known when performing interlocking. The "known" mentioned here may mean that the original PIN code is consistent with the one stored in the wireless terminal, such as a default value, such as "1234" , the original PIN code can also be input into the wireless terminal by the operator (such as the operator) who performs the interlocking. When the interlocked wireless terminal is turned on again, if the subscriber identification card is in the PIN code enabling state, then it is judged whether the subscriber identification card is the subscriber identification card interlocked with the wireless terminal, if not, it cannot be started normally. That is to say, after interlocking, the wireless terminal can only use the corresponding subscriber identification card, and at the same time, this subscriber identification card cannot be used on other wireless terminals.

The method for interlocking the wireless terminal and the subscriber identification card is shown in Figure 1, including:

A. Activate the interlock state of the wireless terminal by inputting information through the keyboard, or operating through the software connected to the wireless terminal, or operating through the air interface of the wireless network (eg, CDMA). It can be activated, but not limited to, by activating—also known as enabling—the machine-card interlock flag in the wireless terminal. For example, the machine-card interlock flag of the wireless terminal is LockEachOther, and the value of LockEachOther is set to is "TRUE".

The machine-card interlocking flag bit is used to judge whether the phone is in an interlocking state, that is, whether it can perform or have carried out an interlocking operation. When it is in an enabling state, it means that the wireless terminal is in an interlocking state; When it is in the working state, it means that the wireless terminal is in the normal working state.

After activation, the wireless terminal enters the state of waiting for interlocking, and the machine-card interlocking flag bit is in the enabling state.

B. After the wireless terminal is turned on, it is judged whether the wireless terminal and the subscriber identification card placed therein are both in the state capable of being interlocked, and if so, proceed to step C; otherwise, do not perform interlocking.

This step can be, but not limited to, divided into the following steps:

B1. After the wireless terminal is turned on, judge whether the interlock state of the wireless terminal is activated; the interlock state of the wireless terminal is activated, but not limited to means that the machine-card interlock flag of the wireless terminal is enabled; for example, judging the LockEachOther Whether the value is "TRUE"; if it is, go to step B2; otherwise, do not perform interlocking operation, and start the wireless terminal according to the existing process.

B2, judge whether there is the user identification card that this wireless terminal can revise in this wireless terminal and this user identification card is in PIN code forbidden state (also called non-PIN lock state), if then carry out step C; If user identification card In the state of PIN code prohibition, but the wireless terminal cannot modify the card, the wireless terminal will shut down or enter the state of not working normally; if the user identification card is in the state of PIN code enablement, it means that the machine card has been interlocked, and the process will be Described in detail later.

In actual application, the judgment in B2 can also be carried out first, and when there is a user identification card that can be modified by the wireless terminal in the wireless terminal and the user identification card is in the state of PIN code prohibition, then the machine-card interaction in the wireless terminal can be judged. Whether the lock flag bit is enabled, if so, proceed to step C.

The ability of the wireless terminal to modify the subscriber identification card can mean, but is not limited to: the PIN code stored in the wireless terminal is consistent with the current PIN code of the subscriber identification card; in practical applications, it can also refer to the interlock operator—if the operator knows the user The card's PIN code is recognized and can be entered into the wireless terminal.

C, the wireless terminal generates a random number, and writes this random number into the subscriber identification card as a new PIN code, and the subscriber identification card is set to the PIN code enabling state—that is, the PIN lock state; and the described as The random number of the new PIN code is stored in the wireless terminal.

At this point, the interlocking between the wireless terminal and the subscriber identification card is completed, and the process ends.

The start-up process of the wireless terminal after the machine-card interlock is shown in Figure 2, which specifically includes the following steps:

200. The wireless terminal starts up.

201. Judging whether the interlocking state of the wireless terminal has been activated may be, but not limited to, judging by judging whether the machine-card interlocking flag is in an enabled state, such as judging whether the value of the interlocking flag LockEachOther is "TRUE"; if If yes, go to step 202; otherwise, proceed according to the existing normal startup process.

202. Determine whether the subscriber identification card in the wireless terminal is in the PIN code enabling state (also called the PIN lock state), and if so, proceed to step 203; if there is no subscriber identification card, an error is prompted; if there is a PIN code Subscriber identification cards in the prohibited state are processed according to the above process.

The order of steps 201 and 202 can also be reversed, that is, the state of the subscriber identification card is judged first, and then the interlocking state of the wireless terminal is judged.

203. Take out the PIN code in the subscriber identification card and compare it with the randomly generated PIN code stored in the wireless terminal. If they are the same, start the wireless terminal normally;

Since the PIN lock state of the interlocked card has been turned on, and the PIN code is a random number, if this card is inserted into another wireless terminal, the state of confirming the PIN code will appear, and this PIN code is the user cannot pass through. obtained in the normal way.

The method for unlocking the wireless terminal and the subscriber identity card includes unlocking the wireless terminal and unlocking the subscriber identity card.

The unlocking of the wireless terminal is to change the wireless terminal to a non-interlocked state. It can, but is not limited to, clear the machine-card interlock flag of the wireless terminal, that is, change the flag to a non-enabled state, as shown in Figure 3. Include the following steps:

301. According to the fixed identification of some wireless terminals, such as: ESN (Electronic Serial Number), and design or select a password generation algorithm to generate a unique corresponding unlock code, and then input it through the PC side software or keyboard , or a wireless network (eg, CDMA) air interface, etc., to input the unlock code into the wireless terminal.

302. The wireless terminal judges the input unlock code, and if it is correct, proceeds to step 303; otherwise, the unlocking fails.

The judging method may be but not limited to: the wireless terminal uses a password generation algorithm to generate a verification code according to its own fixed identity, and if the input unlock code is the same as the verification code, the unlock code is considered correct. The identification based on which the verification code and the unlock code are generated and the password generation algorithm adopted are the same.

303. Change the wireless terminal to a non-interlocked state, so as to realize unlocking of the phone. The implementation of changing the wireless terminal to the non-interlock state can be, but not limited to, clearing the machine-card interlock flag of the wireless terminal, that is, changing the enable state of the flag to a non-enable state, such as setting the value of LockEachOther to is "FALSE".

The essence of subscriber identification card unlocking is to change the PIN code of the subscriber identification card to a PIN code known to the user. As shown in Figure 4, the method for unlocking the subscriber identification card may, but is not limited to, include the following steps:

401. Put the subscriber identification card into the non-interlocked wireless terminal and turn it on;

402. Since the user identification card is in the PIN code enabled state, the wireless terminal will prompt to enter the PIN code. After three wrong inputs, the wireless terminal will prompt to enter the PUK (personal unlocking code) code; then, after entering the correct PUK code, proceed to step 403 If it is not correct, then the same as the prior art, continue to prompt to input the PUK code, and the user identification card will be completely locked after being wrong for a certain number of times.

403. Prompt the user to input a new PIN code.

404. The wireless terminal starts up normally.

Of course, the implementation of unlocking the subscriber identification card is not necessarily limited to steps 401 to 405, and there are other implementations. For example, it can be set that when the wireless terminal is unlocked, the wireless terminal restores the PIN code of the subscriber identification card placed therein to Initial default value.

The present invention also provides a wireless terminal capable of interlocking with a subscriber identification card, as shown in FIG. 5 , including an interlock judging module, an interlock executing module, and may also include an interlock matching module and an unlocking module.

The interlock judging module is used to judge whether the wireless terminal and the subscriber identification card placed therein are in a state capable of interlocking after the wireless terminal is turned on, and if so, send an interlock execution command to the interlock execution module; It is also used to judge whether the wireless terminal and the subscriber identification card placed therein are in the interlocked state after the wireless terminal is turned on, and if so, send an interlocking matching command to the interlocking matching module.

The state where the wireless terminal is capable of interlocking means: the interlocking state of the wireless terminal has been activated; the state where the subscriber identification card is capable of interlocking means that the subscriber identification card is in a state where the PIN code is prohibited, and The wireless terminal can be modified. The activated interlock state of the wireless terminal may, but is not limited to, mean that the machine-card interlock flag of the wireless terminal is in an enabled state.

The interlock judging module is also used to notify the wireless terminal to enter the state of not working properly or directly shut down when it is judged that the interlock state of the wireless terminal has been activated and the subscriber identification card is in the PIN code prohibited state but the wireless terminal cannot modify the card. .

The ability of the wireless terminal to modify the subscriber identification card can mean, but is not limited to: the PIN code stored in the wireless terminal is consistent with the current PIN code of the subscriber identification card; in practical applications, it can also refer to the interlock operator—if the operator knows the user The card's PIN code is recognized and can be entered into the wireless terminal.

The interlocking state of the wireless terminal and the subscriber identification card placed therein means that the interlocking state of the wireless terminal has been activated, and there is a subscriber identification card in the PIN code enabled state in the wireless terminal. The activated interlock state of the wireless terminal may, but is not limited to, mean that the machine-card interlock flag in the wireless terminal is in an enabled state.

The interlock execution module is used to generate a random number after receiving the interlock execution instruction, and write this random number into the user identification card as a new PIN code, and change the user identification card into a PIN code to use function state, and save the random number as the new PIN code in the wireless terminal.

The interlock matching module is used to take out the PIN code in the subscriber identification card after receiving the interlock matching instruction and compare it with the random number stored in the wireless terminal as the PIN code, and if the same, notify the wireless terminal to start normally; If it is not the same, then the wireless terminal is notified to enter the state of not working properly or directly shut down.

The unlocking module is used to receive the unlock code input to the wireless terminal, and judge whether the unlock code is correct, and if it is correct, change the wireless terminal to a non-interlocked state. The implementation manner of changing the wireless terminal to the non-interlock state may be, but not limited to, clearing the machine-card interlock flag bit of the wireless terminal.

The method for generating the unlock code is the same as that described above.

Judging whether the unlock code is correct may, but is not limited to, refer to: the unlock module generates a verification code with a password generation algorithm according to the fixed identification of the wireless terminal itself. If the input unlock code is the same as the verification code, the unlock code is considered correct. The identification based on which the verification code and the unlock code are generated and the password generation algorithm adopted are the same.

Of course, the present invention can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the present invention without departing from the spirit and essence of the present invention, but these corresponding Changes and deformations should all belong to the protection scope of the appended claims of the present invention.

Claims (9)

1. A method for interlocking a wireless terminal and a subscriber identification card, characterized in that, when adding a machine-card interlocking code in the wireless terminal and setting a machine-card interlocking flag, comprising: A. After the wireless terminal is turned on, if both the wireless terminal and the subscriber identification card are in the state of interlocking, the details include: After the wireless terminal is turned on, if the machine-card interlock flag in the wireless terminal is in the enable state, and there is a user identification card in the wireless terminal that is in the state of personal identification code prohibition and the wireless terminal can be modified, then proceed to step B; B, the wireless terminal generates a random number, and writes this random number into the subscriber identification card as a new personal identification code, and saves it in the wireless terminal; The step B also includes: changing the user identification card into the enabled state of the personal identification code. 2. The method according to claim 1, wherein said step A further comprises: If the machine-card interlock flag in the wireless terminal is enabled, and there is a user identification card in the state of personal identification code prohibited in the wireless terminal, but the wireless terminal cannot modify the card, the wireless terminal will shut down or cannot enter normally. working status; If the machine-card interlock flag in the wireless terminal is enabled, and there is a user identification card in the enabled state of the personal identification code in the wireless terminal, then take out the personal identification code in the user identification card and the information stored in the wireless terminal. If they are the same, the wireless terminal will be started normally; if they are not the same, the wireless terminal will enter the state of not working normally or shut down directly. 3. A method for interlocking and unlocking a wireless terminal and a user identification card, characterized in that, when adding a machine-card interlocking code in the wireless terminal and setting a machine-card interlocking flag, wherein An interlock consists of the following steps: A. After the wireless terminal is turned on, if both the wireless terminal and the subscriber identification card are in the state of interlocking, the details include: After the wireless terminal is turned on, if the machine-card interlock flag in the wireless terminal is in the enable state, and there is a user identification card in the wireless terminal that is in the state of personal identification code prohibition and the wireless terminal can be modified, then proceed to step B; B, the wireless terminal generates a random number, and writes this random number into the user identification card as a new personal identification code, and saves it in the wireless terminal; said step B also includes: changing the user identification card into a personal identification Code enable state; Unlocking includes the unlocking of the wireless terminal and the unlocking of the subscriber identification card; The unlocking of the wireless terminal includes: a1. Generate an unlock code and input it into the wireless terminal; a2. If the wireless terminal judges that the unlock code is correct, proceed to a3; a3. The wireless terminal enters the non-interlock state; The unlocking of the user identification card includes: changing the personal identification code of the user identification card. 4. The method according to claim 3, wherein said step A further comprises: If the machine-card interlock flag in the wireless terminal is enabled, and there is a user identification card in the state of personal identification code prohibited in the wireless terminal, but the wireless terminal cannot modify the card, the wireless terminal will shut down or cannot enter normally. working status; If there is a user identification card in the wireless terminal and the user identification card is in the PIN enabled state, then take out the PIN in the user identification card and compare it with the PIN stored in the wireless terminal, and if they are the same, start normally Wireless terminal; if not the same, the wireless terminal enters the state of not working properly or shuts down directly. 5. The method according to claim 3, wherein the step a1 is specifically: generating an unlock code according to a fixed identification of the wireless terminal itself and an algorithm for generating a password; The step a2 specifically includes: the wireless terminal generates a verification code with a password generation algorithm according to its own fixed identification, if the input unlock code is the same as the verification code, then it is considered that the unlock code is correct, and step a3 is performed; The identification according to and the password generation algorithm adopted are the same as those in step a1. 6. A wireless terminal capable of interlocking with a subscriber identification card, characterized in that it includes an interlock judgment module and an interlock execution module, and adds a processing code for machine-card interlocking in the wireless terminal and sets machine-card interlocking lock flag; The interlock judging module is used to judge whether the wireless terminal and the subscriber identification card placed therein are in a state capable of interlocking after the wireless terminal is turned on, and if so, send an interlock execution command to the interlock execution module; The interlock execution module is used to generate a random number after receiving the interlock execution instruction, and write this random number as a new personal identification code into the user identification card, and write the random number as a new personal identification code. The random number of the code is stored in the wireless terminal; The state where the wireless terminal can be interlocked means that the machine-card interlock flag of the wireless terminal is enabled; the state where the subscriber identification card can be interlocked means that the subscriber identity card is in the PIN Code prohibition status, and the wireless terminal can be modified; The interlock execution module is also used to change the user identification card into the PIN enabled state after receiving the interlock execution instruction. 7. The wireless terminal according to claim 6, wherein the interlock judging module is also used for judging that the interlock state of the wireless terminal has been activated, the subscriber identification card is in the PIN code prohibited state but the wireless terminal cannot When modifying the card, notify the wireless terminal to enter the state of not working normally or shut down directly. 8. The wireless terminal according to claim 6, further comprising: an interlock matching module; The interlock judging module is also used to judge whether the machine-card interlock flag in the wireless terminal is in an enabled state after the wireless terminal is turned on, and there is a user identification card in a personal identification code enabled state in the wireless terminal; If yes, an interlock matching command is sent to the interlock matching module; The interlock matching module is used to take out the PIN code in the user identification card after receiving the interlock matching instruction and compare it with the random number stored in the wireless terminal as a personal identification code, and if the same, notify the wireless terminal to start normally ; If not the same, then notify the wireless terminal to enter the state of not working properly or shut down directly. 9. The wireless terminal according to claim 6, further comprising: an unlocking module; The unlocking module is used to receive the unlock code of the input wireless terminal, and judge whether the unlock code is correct, and if it is correct, clear the machine-card interlock flag of the wireless terminal.

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