A method and apparatus for restoring state information associated with a software application executing within an electronic card (100), is disclosed. The electronic card (100) comprises a card portion (270) having an electronic apparatus (259) attached thereto. The electronic apparatus (259) comprises...http://www.google.co.uk/patents/US6971583?utm_source=gb-gplus-sharePatent US6971583 - Method of securely preserving volatile data while powering down a smart card
