The normal method of electronic identification is to identity people by their labels. That is their name, their different forms of id or "their number". Identity by presence gives individuals a different way to identify themselves electronically and that is to have a one or more representations of themselves in cyberspace so that they are identified by their presence. The approach is privacy friendly, inexpensive and changes the dynamics and possibilities for electronic communication and interaction. It makes - for example - id cards obsolete, enables secret electronic voting, brings responsibility to electronic communication while preserving anonymity.
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