A data security system and method protects stored data from unauthorized access. According to one aspect of the invention, a client computing device communicates periodically with a server. If communications is not established between the client and the server for a selected activation interval and a...http://www.google.com/patents/US7421589?utm_source=gb-gplus-sharePatent US7421589 - System and method for lost data destruction of electronic data stored on a portable electronic device using a security interval
