A method of locking a communication device based on proximity includes a step of providing (202) a location device that is positioned on the person of an authorized user of the communication device. The communication device and the location device are initialized (204) to define proximity locking rules....http://www.google.de/patents/US20040203895?utm_source=gb-gplus-sharePatent US20040203895 - Locking of communication device based on proximity
