| 摘要 |
A method for monitoring and tracking the position of a subject comprises, in an exemplary embodiment, the steps of embedding a transponder into an article to be worn by the subject and installing software in a GPS-enabled receiver, such as a cell phone or the like, for synchronizing and communicating with the transponder. The receiver is to be maintained by a user, such as a guardian or the like, and stores a unique transponder code, allowing the receiver to synchronize with the transponder. The receiver may remotely activate the transponder manually or automatically, at which point the receiver triangulates the geographic position of the transponder and determines distance and direction of the transponder from the receiver in order to guide the user in the direction of the transponder. In further embodiments, the receiver communicates the subject's information and tracking code to other subscribing receivers to increase the number of searchers. |
