Systems and methods of using those systems to secure and track personal possessions are disclosed. Generally, such systems comprise a portable communication device having incorporated therein security device detection circuitry, location identification circuitry, and wireless communication circuitry, and a security device attached to the object to be secured and capable of being detected by the security device detection circuitry. Also, methods of retrofitting existing electronic devices to function in accordance with the present invention by providing a replacement battery are also described.