US Patent 7885763 Apparatus and methods for tracking movement of persons

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 to the tag. The entry can include a variety of data including, for example, the location entry indicating a time the tag was detected and a location of the detection. The system and method are particularly, but not exclusively, suited for use with airline travel.