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1. (WO2010123843) OBSERVABLE MOMENT ENCRYPTION

Pub. No.:    WO/2010/123843    International Application No.:    PCT/US2010/031669
Publication Date: Fri Oct 29 01:59:59 CEST 2010 International Filing Date: Wed Apr 21 01:59:59 CEST 2010
IPC: G06K 19/00
G06F 21/00
G06Q 20/00
Applicants: VISA INTERNATIONAL SERVICE ASSOCIATION
FAITH, Patrick
CARLSON, Mark
Inventors: FAITH, Patrick
CARLSON, Mark
Title: OBSERVABLE MOMENT ENCRYPTION
Abstract:
A method, system and apparatus for encrypting a consumer identification number contained in a portable consumer device by gradually changing a consumer identification number when an observable moment is observed is disclosed. Observable moments can be exposure to light or an electromagnetic field, use of the portable consumer device or a change in temperature. A pattern or history of how the consumer identification number is gradually changed is used to authenticate the portable consumer device or the consumer.