Method and apparatus for tracking and monitoring containers

摘要

A radio frequency identification (RFID) tag can be used for tracking and monitoring. The tag may transmit information via an RFID link, or via a further link, and the tag may be commissioned or decommissioned via this further link. The further link may be a cellular telephone network, a satellite, a wireless computer network. The tag may include a Global Positioning System (GPS) receiver and, if so, may use coarse location information from a received wireless signal to more rapidly calculate a GPS fix. The tag may carry out power management based on sensor inputs and/or a geofencing analysis. The tag may adjust a sensor configuration based on a received wireless signal. The tag may have an RFID reader that can communication with other tags. The tag may have a deep sleep mode, and may exit that mode only in response to a human act.