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WO2011071401A1 - Dispositif et système de vote passif sans fil - Google Patents

Dispositif et système de vote passif sans fil Download PDF

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Publication number
WO2011071401A1
WO2011071401A1 PCT/PT2009/000071 PT2009000071W WO2011071401A1 WO 2011071401 A1 WO2011071401 A1 WO 2011071401A1 PT 2009000071 W PT2009000071 W PT 2009000071W WO 2011071401 A1 WO2011071401 A1 WO 2011071401A1
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WO
WIPO (PCT)
Prior art keywords
rfid
rfid tag
rfid tags
tags
masking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/PT2009/000071
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English (en)
Inventor
Jorge Manuel Lopes Leal Rodrigues Da Costa
Carlos António CARDOSO FERNANDES
Carla Sofia Dos Reis Medeiros
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Instituto de Telecomunicacoes
Original Assignee
Instituto de Telecomunicacoes
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Instituto de Telecomunicacoes filed Critical Instituto de Telecomunicacoes
Publication of WO2011071401A1 publication Critical patent/WO2011071401A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C13/00—Voting apparatus

Definitions

  • the present invention relates to a wireless passive voting device and system using radiofrequency identification technology .
  • WO 2006/093363 entitled “System for Electronically Voting, Counting and Examining Ballots” , a system for electronic voting and counting of ballots, especially for elections, is disclosed.
  • the system includes an identification terminal in which the voter is identified by means of a magnetic card, barcode, or RFID card, related over a net (wireless or cable wired) to a voters database.
  • wireless communication systems have been proposed, similar to those used in cellular phones.
  • electronic devices are complex and expensive, also being, for that matter, inadequate when used in free access spaces, such as for instance classrooms.
  • Radiofrequency identification (RFID) technology allows reading and detection of RFID labels (RFID "tags”) via radio, without the need of line of sight.
  • RFID tags RFID labels
  • Each RFID tag has a unique code associated, and the application on an object unambiguously allows its remote identification.
  • a standard RFID system includes RFID tags and one or more antennas associated to a radiofrequency reader or interrogator.
  • RFID tags consisting of a microprocessor and an antenna, may pertain to distinct categories depending on how they work: passive, active and semi-passive tags.
  • Active RFID tags have an energy source in it (typically batteries) and they continuously broadcast the signal to the reader. More usual passive RFID tags do not have any battery, and they draw the energy they need to operate from the signal broadcasted from the reader antenna; when interrogated, the microprocessor contained in the RFID tag broadcasts back to the reader the unambiguous information recorded; they are incomparably less expensive than active tags, but have an inferior range.
  • Semi-passive RFID tags use the battery to power the microprocessor. In all cases, information broadcasted from RFID tags is can be automatically processed by a computer.
  • RFID tag circuit is modified by the user when employing a conductive pen to validate a form verification box corresponding to the desired answer.
  • the user changes the RFID tag internal circuit, and through the connection of the verification boxes to registration circuits in the dedicated RFID tag, the RFID tag answer is modified when interrogated.
  • RFID technology operates in frequencies regulated by standard specifications and regulatory organizations, typically in LF, HF, UHF and Microwave bands. At present, the most used passive RFID tags pertain to UHF band given its features, low technology cost and a larger range compared to other bands .
  • the band assigned by International Telecommunications Union (ITU) to UHF RFID covers the range comprised between 860 and 960 MHz and it was partitioned into three sub-bands for assignment to different world regions.
  • ITU International Telecommunications Union
  • the present invention based upon passive UHF RFID, provides a device and an improved reading and counting system of answers in audiences such as classrooms or voting assemblies, and the counting of multiple answers or votes is virtually simultaneous, being advantageous as it does not require any kind of batteries, neither connection leads to the device and is portable. Additionally, the device fabrication method is rather simple and with very low cost, the device being disposable. On the other hand, the device allows an easy and quick evaluation of opinions, knowledge, etc. When voting or carrying out evaluations in a classroom environment or in a knowledge test, it can be provided as a device with anonymous answer or with user identification.
  • the present invention relates to a wireless passive voting device and system using UHF passive radiofrequency identification (RFID) tags.
  • RFID radiofrequency identification
  • Wireless passive voting device in accordance with the invention comprises
  • each RFID tag corresponding to a selectable vote option or answer;
  • a RFID tag masking layer comprising one electromagnetically opaque single film or a plurality of film strips arranged radially or azimuthally along a centre circumference, with a generally rectangular shape, centred or centrable with said RFID tags of the carrier layer, and whose dimensions are larger or at least the same as the dimensions of RFID tags;
  • a region for RFID visibility and RFID tag reading provided on said RFID tag masking layer, centred or centrable with selected RFID UHF tag and which allows detection and unambiguous identification of said RFID tag corresponding to the selected vote option or answer.
  • the device may present an outer protection layer made of dielectric material, equal or different from the carrier layer.
  • the device comprises N RFID tags and electromagnetically opaque single film or N-l electromagnetically opaque strips, wherein N is equal or higher than 2.
  • the visibility region is provided on the RFID tag masking layer as a generally rectangular window.
  • the window is centrable by rotation sliding in the attachment rotating means or by linear sliding of the carrier layer and/or masking layer and/or outer protection layer, with RFID tag corresponding to the selected vote option or answer, allowing reading of the same .
  • the number of RFID tags and electromagnetically opaque strips, centred in relation to each other is the same.
  • the masking layer is comprised of a single film. The visibility region is provided on the RFID tag masking layer by detachment of the electromagnetically opaque film or strip centred to the RFID tag corresponding to the selected vote option or answer.
  • RFID tags on the carrier layer and electromagnetically opaque strips on the masking layer may be arranged along a circumference, the maximum number of tags depending on the circumference radius, size and wavelength in free space.
  • the minimum distance between two adjacent RFID tags and between two adjacent masking strips is higher than 0.04 ⁇ ⁇ , respectively.
  • RFID tags on the carrier layer and the electromagnetically opaque strips on the RFID masking layer are arranged in a parallel and uniformly spaced mode along the carrier layer length.
  • the minimum distance between two adjacent RFID tags and between two adjacent masking strips is higher than 0.04 ⁇ ⁇ , respectively.
  • a second RFID tag masking layer, identical to the masking layer can be provided over or under RFID tags. The length of electromagnetically opaque strips of both layers is reduced at least to 70% compared to the length of the same, the width being equal or greater than the width of RFID tags.
  • the minimal width and length dimension of the RFID visibility region maintaining the RFID tag range are determined depending on the passive UHF RFID tag width and length and on the wavelength at UHF.
  • the invention comprises
  • attachment means of said RFID tags and of said masking electromagnetically opaque strips preferably an axle passing through the tags, electromagnetically opaque strips and barrier layers holes, also appropriate to rotate RFID tag corresponding to the selected vote option or answer and generation of the visibility region, allowing the exhibition, detection and reading of RFID tag.
  • two carrier and protection layers made of metal or dielectric material with an arbitrary permittivity, and also provided with a hole on one end, through which passes said attachment means.
  • the single film and strips electromagnetically opaque of the masking layer are comprised of an electromagnetic radiation absorbing or reflective material selected out from a metallic material, absorbing graphite or other electromagnetically opaque material; preferably, the material is an aluminium foil or tin foil.
  • a wireless RFID voting system for reading and counting of votes or answers further comprises, additionally to said devices, a RFID reading antenna connected to a RFID reader, directly or by means of an electronic switch (multiplexer) , such as to allow communication of the data broadcasted by the selected RFID tag(s) in the voting device (s) to a computer application, for registration and/or processing of the reading results, the identification of selected vote option or answer in each device being performed by means of identification codes related to each of RFID tags of the device (s) .
  • Such system can be provided to assign to each voting device the identification of each inquired person and can further comprise the attachment of appropriate deactivation means of the device such as the "kill" command.
  • the present invention further relates to a voting method such as defined in claim 15.
  • the device in accordance with the present invention allows advantageous masking, in a simple way, of all UHF passive RFID tags behind an electromagnetically opaque layer except the tag corresponding to the voter selected answer.
  • Another advantage of the invention lies in the very simple assembly of the device comprising a number of layers with arbitrarily small thicknesses, with different functions, the cost for mass production being so low that the voting devices can be disposable. Still another advantage of the present invention lies in that the device and voting system operate without requiring any kind of wiring or batteries, since it is composed of passive RFID tags.
  • Fig. 1 is a partial simplified schematic perspective view of a wireless voting device in accordance with a embodiment of the invention with RFID tags arranged over a circumference on the carrier layer, with the RFID tag masking layer omitted;
  • Fig. 2 is a partial simplified schematic perspective view of the wireless voting device in fig. 1 with a RFID tag masking layer comprising two electromagnetically opaque strips in a masking position of two of said tags and a RFID visibility region in relation to third tag;
  • Fig. 3 is a partial simplified schematic perspective view of an alternative embodiment of the wireless voting device in accordance with fig. 1 with a RFID tag masking layer comprising only one electromagnetically opaque strip or film in a masking position of two of said tags and a RFID visibility region in relation to third tag;
  • Fig. 4 is a partial simplified schematic perspective view of the wireless voting device in accordance with another embodiment of the invention with RFID tags radially arranged on the carrier layer and a RFID tag masking layer comprising two electromagnetically opaque strips in a masking position of two of said tags and a RFID visibility region in relation to third tag;
  • Fig. 5 is a cross sectional view, along line A-A' in fig. 2 and line B-B 1 in fig. 4, of a variant in Fig. 2-4 that further comprises a outer protection layer;
  • Fig. 6 is a cross sectional view, along to line A-A' in fig.
  • Fig. 7 is a perspective view of another embodiment of the wireless voting device in accordance with the invention.
  • Fig. 8 is a perspective view of another embodiment of the wireless voting device in accordance with the invention.
  • Fig. 9 is a representation of a wireless RFID voting system in accordance with the invention for reading and counting votes with the devices in Fig. 1 to 8.
  • the identification of each particular element in discussion is made using a unique numeration.
  • Operation of the device of the present invention is based in the masking and exhibition principle of passive RFID tags with unambiguous identification, associated to different vote options .
  • the device in accordance with the present inventions in its more simplified form, comprises a passive UHF RFID tag layer, a visibility region for a RFID tag of the device and a masking layer of the remaining RFID tags.
  • the wireless passive voting device of the present invention comprises at least two passive UHF RFID tags and at least a RFID tag masking layer and a RFID visibility region.
  • Each passive RFID tag corresponds to an answer or vote, whereupon the possible number of vote options in each device depends on the total number of RFID tags contained in the same.
  • Passive UHF RFID tags essentially comprise a printed antenna and a chip.
  • passive RFID tags operating in UHF band are composed of dipole antennas powered by a central chip and are commercially available.
  • RFID tags performance can be heavily affected due to the presence of certain materials, such as metal or others whereupon a way to prevent UHF band RFID tags detection consists in blocking the energy incoming to the tag emitted by the reader antenna that would be necessary to the operation thereof.
  • the function of the RFID tag masking layer is to prevent passive UHF RFID tags corresponding to vote options from receiving the necessary energy to be activated, thus making them undetectable by the RFID system (reading antenna and RFID reader) .
  • the RFID tag masking layer in the present invention comprises at the maximum extent a single film, or at the minimum extent, several strips, electromagnetically opaque, centrable in relation to RFID tags and corresponding chip, for maximizing the device performance.
  • Tags operating in UHF RFID band, linearly polarized, are generally rectangular in shape, as well as the electromagnetically opaque strips, presenting the length as the larger dimension and the width as the lower dimension.
  • the electromagnetically opaque film or strips can be comprised of an electromagnetic radiation absorbing or reflective material, e. g., a metallic material, absorbing graphite or any material appropriate to produce an electromagnetic shadow.
  • a metallic material e. g., a metallic material, absorbing graphite or any material appropriate to produce an electromagnetic shadow.
  • they are metallic.
  • appropriate metallic materials are aluminium foil and/or tin foil.
  • a device in accordance with the invention comprising N passive UHF RFID tags wherein N is equal or higher than 2, can be provided in the RFID tag masking layer with an electromagnetically opaque single film or with N-l strips centrable over or under N-l RFID tags corresponding to non desired vote options.
  • the device comprises a second RFID tag masking layer on the opposed face of passive UHF RFID tags.
  • This embodiment is also appropriate when a stronger device is to be ensured. It requires electromagnetically opaque strips with lesser area than in the case where only one RFID tag masking layer is used. Length of each electromagnetically opaque strip along the RFID tag larger dimension, in case of a single RFID tag masking layer, should not be lesser than the larger dimension Le of the same (usually length) . Width of electromagnetically opaque strips pertaining to the RFID tag masking layer can be any, provided it is at least equal to the RFID tag width. In the limit, the strips can be united, forming a single film.
  • minimum length of electromagnetically opaque strips on opposed faces to each RFID tag must be at least 70% of the larger dimension of the same (usually length) .
  • the electromagnetically opaque strips width is not relevant in RFID tag masking layer, provided that it is at least equal to the RFID tags width. In the limit, strips are united, as in the case of a single RFID tag masking layer, forming a single film.
  • RFID tag detection corresponding to the desired vote in the device of the present invention is provided by a RFID visibility region whose function is to include a RFID visibility area into the device that clears up a volume between RFID reading antenna and the desired passive UHF RFID tag thus allowing the identification of the same by RFID system.
  • a RFID visibility region whose function is to include a RFID visibility area into the device that clears up a volume between RFID reading antenna and the desired passive UHF RFID tag thus allowing the identification of the same by RFID system.
  • overlaying in the device is not allowed, from the point of view of RFID reading system, between electromagnetically opaque material of the RFID tag masking layer and the volume defining RFID visibility region.
  • RFID visibility region in the device thus corresponds to the minimum area centrable in relation to passive UHF RFID tag which is necessary so that the range of the same is not affected by the RFID tag masking layer material.
  • RFID visibility region size relies on the size of each RFID tag relatively to wavelength in UHF band.
  • the larger dimension of passive UHF RFID tags, and with linear polarization corresponds to length Le
  • RFID visibility region minimum size that does not reduce RFID tag range with reference to the situation in free space for the individual RFID tag in RFID system (reading antenna and RFID reader), width Wj and length Lj are:
  • the RFID tag layer can be positioned on a carrier layer made of dielectric material for support, with a dielectric permittivity less than 3 and thickness less than 0.01 ⁇ 0 .
  • Passive UHF RFID tags can be arranged in different ways on the carrier layer: parallel, radially or on an r radius circumference.
  • the maximum number N of RFID tags on an r radius circumference inside the device should be less than
  • Le is the larger dimension of RFID tag (usually related to length) and ⁇ 0 is wavelength in free space.
  • voting devices in accordance with the present invention can be disposable or for one use only or reusable .
  • RFID visibility region corresponding to the vote option can be achieved in a number of ways.
  • the tags being radially or parallel arranged on a circumference, the visibility region is achieved by simple detachment or removal of the RFID tag masking layer that is deliberately overlapped over the corresponding volume of the RFID visibility region.
  • both RFID tag masking layer (s) and the carrier layer for the RFID tag layer are slidable in rotation or linearly over each other, or like a "pocket-knife", in which case RFID tags are connected by a common attachment and rotating means on one of the ends thereof.
  • RFID tags are arranged parallel to each other and overlapped and are connected by an attachment and rotating means passing through one of the ends of the tags through a hole provided for that purpose.
  • RFID tag masking layer comprises electromagnet ically opaque strips alternating with the RFID tags. Region visibility volume is exhibited after rotating one of the RFID tags, corresponding to the vote, in the attachment and rotating means, thus making it detectable by the RFID reading system.
  • the device is preferably reusable.
  • the device can optionally comprise at least an outer protection layer made of dielectric material over the RFID tag masking layer, integral or not with the carrier layer.
  • the carrier layer dielectric material has a dielectric permittivity less than 3 and a thickness less than 0.01 ⁇ 0 , and the material thereof is the same or different from the carrier layer .
  • voting system comprises at least a voting device, at least a RFID reading antenna connected to a RFID reader directly or by means of an electronic switch (multiplexer) so that it allows communication of the data broadcasted by the voting device (s) to a computer application, for registration and/or processing of the reading results.
  • the selected vote identification in each device is performed using a database containing identification codes pertaining to each of the RFID tags of the device (s) .
  • RFID tag corresponding to the desired answer or vote in the device when centred to the RFID visibility region, can be interrogated by the UHF RFID reading antenna.
  • RFID tag broadcasts the corresponding identification code that, in turn, is processed by a RFID reader, under the same standard, that returns the identification contained in the tag corresponding to the vote selected by the user.
  • RFID tags remaining covered by RFID tag masking layer are not detected by the RFID system (RFID reading antenna and RFID reader) .
  • reading data is processed using a dedicated and centralized database or in the computer having assigned to each RFID tag of each device the corresponding vote option.
  • a voting system composed of one or multiple devices, only the RFID tag identifications related to selected answers or votes whose volume is uncovered by the RFID visibility regions of devices existing in the region of the detection/covering volume of the RFID reading antenna (s) are detected.
  • One or more RFID reading antennas can interrogate different devices simultaneously.
  • the device and system of the present invention allow an unambiguous identification of the passive UHF RFID tag corresponding to user vote(s), effectively preventing the detection of the remaining RFID tags by the RFID reading system.
  • the voting or selection will be anonymous with respect to the voter or user.
  • an identification of the inquired person can be externally linked to the device of the present invention.
  • device deactivation means can be provided, such as: total destruction of the device, destruction of RFID tags in the device or deactivation of RFID tags using the "kill" command .
  • Fig. 1 partially shows a device 1 in accordance with the invention, in simplified form, comprising a carrier layer or substrate 2 made of dielectric material, a RFID tag layer 3 provided with three passive UHF tags, equiangular, arranged on said carrier layer 2 and on an circumference 4 with a radius r, centred on 5 to the device 1.
  • the three RFID tags 3 correspond to three different vote possibilities.
  • the wireless device in fig. 1 requires a RFID tag masking layer 6 as shown in fig. 2.
  • Fig. 2 is a partial simplified schematic perspective view of the wireless voting device in fig. 1 with the RFID tag masking layer 6, in its minimum extent version, comprising two electromagnetically opaque strips in a masking position of two of said RFID tags 3 and a RFID visibility region 7 in relation to the third tag corresponding to the desired vote.
  • fig. 3 partially shows a device 1 in accordance with fig. 1, in simplified form, comprising a RFID tag masking layer 6 which in its maximum extent version consists oaf single electromagnetically opaque film and a RFID visibility region 7 provided in the RFID tag masking layer 6 for the RFID tag 3 corresponding to the desired vote.
  • the electromagnetically opaque strips and single film of the RFID tag masking layer 6 are centrally arranged to the chip and over the RFID tag layer 3, ensuring a better performance for the device 1 in fig. 2 and 3.
  • the area defining RFID visibility zone 7 of device 1 is provided on the RFID tag masking layer 6 but without overlap with the RFID visibility zone volume and it should be centrable to the RFID tag 3.
  • the maximum number of RFID tags 3 on r radius circumference 4, minimum dimensions of the electromagnetically opaque single film or strips of the RFID tag masking layer 6 and RFID visibility region 7 are the previously referred as well as the materials of the carrier layer 2 and RFID tag masking layer 6.
  • Fig. 4 partially shows another embodiment of the device 1 in accordance with the invention, in a simplified form, comprising a carrier layer 2 made of dielectric material, a RFID tag layer 3 provided with three passive UHF tags, equiangular, arranged radially on said carrier layer 2 in relation to centre 5 of device 1, and a RFID tag masking layer 6 composed of two electromagnetically opaque strips, one for each RFID tag 3, corresponding to non desired vote options.
  • a RFID visibility region 7 is provided in RFID tag masking layer 6, for the third RFID tag 3, corresponding to the desired vote.
  • the RFID tag masking layer 6 of the device in fig. 4 may consist of a single electromagnetically opaque film.
  • Fig. 5 is a cross sectional view of devices 1 in fig. 2 and fig. 4 along line A-A' of the device in fig. 2 and line B-B ' in fig. 4, respectively, with a RFID tag masking layer 6 over RFID tags 3 with the carrier layer 2 and including a dielectric outer protection layer 8.
  • Fig. 6 shows another alternative embodiment of the device 1 in fig. 2 and fig. 4 in cross section according to line A-A' of the device in fig. 2 and line B-B' of the device in fig. 4, provided with two RFID tag masking layers 6 and 6', respectively over and under RFID tags 3, including carrier layer 2 and outer dielectric barrier layer 8.
  • the embodiment of the invention in fig. 5 shows only one RFID tag masking layer 6 (overlaying the tags) and second arrangement in fig. 6 is composed of a first and second RFID tag masking layers 6 and 6' on opposed faces to the RFID tags.
  • the first RFID tag masking layer 6 is similar to RFID tag masking layer 6 in fig. 5 and second RFID tag masking layer 6' is provided under RFID tags 3.
  • Using two RFID tag masking layer 6 and 6' as depicted in fig. 6 is advantageous to prevent possible accidental detections and/or maximize range of each RFID tag 3 in device 1.
  • the electromagnetically opaque strips length can be reduced compared to the length of the same in the embodiment in fig. 5 provided with only a RFID tag masking layer 6.
  • the electromagnetically opaque strips width of RFID tag masking layer 6 can be any, provided it does not overlap the RFID visibility region and it is larger than RFID tags 3 width.
  • the rotating layer of device 1 in fig. 2-6 both corresponds to the carrier layer 2, integral with RFID tag layer 3, and to the RFID tag masking layers 6 and 6', rotating simultaneously.
  • the attachment and rotating means matches axle 5 in figs. 1-4.
  • Voting device 1 can comprise one or more additional carrier layers made of dielectric material, for instance, for purposes of rotation of the layers, in case the device is reusable, over or under tag masking strips 6, 6', provided its dielectric permittivity is no higher than 3 and thickness inferior to
  • visibility region 7 is achieved by means of detachment of the electromagnetically opaque material from the RFID tag masking layer (s) 6 and 6' overlapping RFID tag 3 corresponding to the desired vote.
  • device 1 comprises a passive UHF RFID tag layer 3, a RFID tag masking layer and a carrier layer 2 made of dielectric material.
  • RFID tags 3 are arranged with the same orientation uniformly spaced among each other along the length of carrier layer 2.
  • Each RFID tag corresponds to a vote option and the total number of RFID tags 3 in each device 1 depends on the size of the carrier layer 2 and size of RFID visibility region 7 and UHF wavelength.
  • the operation of device 1 in fig. 7 and sizes of the area defining the RFID visibility region 7 and electromagnetically opaque strips composing the RFID tag masking layer 6 have the above mentioned restrictions.
  • this embodiment can be provided with a RFID tag masking layer 6' (not depicted) .
  • the sliding layer of device 1 in fig. 7 corresponds to carrier layer 2 or to both RFID tag masking layers 6 and 6', provided with respective visibility regions 7 and 7' and without the volume of the same overlaps the electromagnetically opaque material of the RFID tag masking layers 6 and 6 ' .
  • the visibility region 7 is provided as referred in the embodiments of the invention in fig. 2 to 6, by detachment of the electromagnetically opaque material of RFID tag masking layer (s) 6 and/or 6' overlapping the visibility region volume that allows the detection of the RFID tag 3 corresponding to the desired vote .
  • Device 1 comprises a dielectric carrier substrate layer 2, with an arbitrary dielectric permittivity (e. g. , plastic) or metallic (e. g., aluminium or tin) at least two passive UHF RFID tags 3 and a RFID tag masking layer that, in this case, is composed of a number of electromagnetically opaque strips 6.
  • an arbitrary dielectric permittivity e. g. , plastic
  • metallic e. g., aluminium or tin
  • RFID tag masking layer that, in this case, is composed of a number of electromagnetically opaque strips 6.
  • RFID tags 3 are arranged parallel and in the same direction alternating with electromagnetically opaque strips 6 constituting the RFID tag masking layer, interlinked in one of the ends by an attachment and rotating means 9.
  • RFID tags 3 are so close as possible and they are provided in any number. Assembly of RFID tag masking layer 6 is simplified: an electromagnetically opaque strip should be provided between two RFID tags 3 for safekeeping of the elimination of possible fortuitous detections, pending from the attachment and rotating means 9.
  • the volume of RFID visibility region 7 is only exposed by rotating the selected RFID tag 3', corresponding to the vote, in relation to the attachment and rotating means 9 of the remaining RFID tags 3 of device 1.
  • the range of the selected RFID tag 3' is not affected by the distance between the same.
  • the method of rotating RFID tag 3 allows the selected RFID tag 3' reading.
  • the length and width of the electromagnetxcally opaque strips of the RFID tag masking layer 6 are equivalent to those of the embodiments in fig. 6 provided with two RFID tag masking layers, and the RFID visibility region 7 is compliant with the above stated restrictions.
  • Fig. 9 depicts, in accordance with the present invention, an embodiment of a voting system or other use in a congregation, composed of multiple devices 1 from fig. 1 to 6. However, also the devices in the embodiments in Fig. 7 and 8 can be used in the system.
  • Each system RFID reading antenna 10 is connected to a RFID reader 11 by means of an electronic switch 12 (multiplexer) allowing communication of the data broadcasted from each device 1 to an application in a computer 13, for registration and/or processing of the reading results.
  • the system RFID reading antennas 10 are connected directly to a RFID reader 11.
  • the identification of the vote option selected in each device 1 is made by means of a database containing the identification codes pertaining to each of RFID tags of each one of the devices.

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Abstract

La présente invention est relative à un dispositif de vote passif sans fil comprenant au moins une couche de support, constituée d'un matériau diélectrique, sur laquelle une pluralité d'étiquettes d'identification par radiofréquence (RFIG) sont agencées, chaque étiquette RFID correspondant à une option ou une réponse de vote sélectionnable; et au moins une couche de masquage d'étiquette RFID sélectionnée comprenant un simple film électromagnétiquement opaque ou une pluralité de bandes de film, avec lesdites étiquettes RFID de la couche de support, une région de visibilité des étiquettes RFID et de lecture des étiquettes RFID, et qui permet de détecter et d'identifier sans ambiguïté ladite étiquette RFID qui correspond à l'option ou à la réponse de vote sélectionnée. La présente invention est en outre relative à un système de vote passif sans fil qui utilise un ou plusieurs dispositif(s), ainsi qu'à un procédé de vote.
PCT/PT2009/000071 2009-12-09 2009-12-10 Dispositif et système de vote passif sans fil Ceased WO2011071401A1 (fr)

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PTPT104873 2009-12-09
PT10487309A PT104873B (pt) 2009-12-09 2009-12-09 Dispositivo e sistema de votação passivo sem fios

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WO2011071401A1 true WO2011071401A1 (fr) 2011-06-16

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WO2014085857A1 (fr) * 2012-12-04 2014-06-12 Reed Licensing Pty Ltd Lecteur rfid et transpondeurs
US9082245B2 (en) 2012-12-28 2015-07-14 Vecsys, LLC Electronic voter card and method for electronic voting
US9402903B2 (en) 2013-04-08 2016-08-02 Daegu Gyeongbuk Institute Of Science And Technology Magnetic field-controlled movable bio-scaffold and constructing method thereof
US11100514B2 (en) * 2018-10-11 2021-08-24 International Business Machines Corporation Authentication system for payment cards
US11213773B2 (en) 2017-03-06 2022-01-04 Cummins Filtration Ip, Inc. Genuine filter recognition with filter monitoring system

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