A system and method for tracking movements of an object of interest using an contact or contactless tag, having a writable memory. A plurality of scanners are dispersed throughout an environment in which movement of the object is to be tracked, wherein when a scanner detects the tag an entry is added...http://www.google.fr/patents/US7885763?utm_source=gb-gplus-shareBrevet US7885763 - Apparatus and methods for tracking movement of persons
Apparatus and methods for tracking movement of persons
