A locator system and method for locating at least one of persons and objects within a facility comprises a plurality of badges, each badge having a badge transmitter that wirelessly transmits a signal including unique identification code, and a plurality of transceivers spatially dispersed within the...http://www.google.fr/patents/US20060282459?utm_source=gb-gplus-shareBrevet US20060282459 - PORTABLE LOCATOR SYSTEM