Security and verification device, method and system

摘要

The invention relates to a method for the verification of parties to a transaction or the authentication of a user within a communications system. The method makes use of a portable computing device that captures a graphical image of a counterpart token and combines this with a token that may be either captured from a graphical image or generated from a user input. The counterpart token and the token are merged in accordance with predefined processes to produce a reveal token that can be displayed as a visual image on a portable computing device to reveal a code or message.