Methods of providing fraud-resistant credit cards, debit cards, ATM cards, identification, and access control on a variety of devices are provided. Various devices and combinations of devices can be used for a single card or account. Multiple cards or accounts, potentially with differing security arrangements,...http://www.google.com.au/patents/US20010034717?utm_source=gb-gplus-sharePatent US20010034717 - Fraud resistant credit card using encryption, encrypted cards on computing devices
