Patent ID: 7737850

Claim:
A method for determining the location of an individual within a site, comprising: providing the individual with a wearable RFID tag; transmitting data from the RFID tag to a plurality of wireless access ports external to the site; and determining the location of the individual within the site based on a location algorithm utilizing the data acquired from the RFID tag, wherein the location algorithm utilizes the plurality of wireless access ports and the data acquired from the RFID tag to determine the location, wherein transmitting the data to the plurality of wireless access ports includes transmitting the data to access ports on one or more vehicles located external to the site; and wherein the location algorithm is configured to determine a distance between the RFID tag and one or more of the wireless access ports through an effective received signal strength indication (RSSI), the effective RSSI comprises RSSI seen by one of the wireless access ports adjusted for site layout, fingerprinting info, and runtime radio frequency environmental characteristics comprising signal to noise ratio, access port to access port beacon, and access port power.