WO2008051365A3 - Origin identity verified mail register system - Google Patents

Abstract

Mail, electronic or physical, bears either a permission stamp containing a permission code, for senders selected by the intended recipient, or a value stamp containing a value code, for all other senders. Both permission and value codes reflect identifying data for mail participants and contain an encrypted code string that can be decoded with either a permission or value postal key by the recipient. As permission stamps are available only to senders selected by the intended recipient permission codes must reflect only the identifying data of the intended recipient while value codes, used by mail participants presumed to be unknown to the intended recipient, must reflect the identity of the sender. Value stamps, moreover, must be purchased and yield a redeemable credit to the recipient for opening or reading. Identifying data for accountable senders must be verifiable and include information for an account from which credits are available to recipients. The postal keys verify the identity of the origin of the received mail as being either a selected sender known to the intended recipient or an accountable sender known to the mail register system.