A system and method for locating objects such as people, pets, and personal articles is described. A transceiver is attached to the person, animal, or item to be tracked and a handheld locator device is employed to transmit a locator signal containing an address code to the transceiver. Upon receipt...http://www.google.com.tw/patents/US6788199?utm_source=gb-gplus-share專利 US6788199 - Article locator system
