| 摘要 |
Devices, systems, and methods are disclosed which relate to a network of RFID readers which detect a location of an RFID transmitter coupled to a portable device. The network of RFID readers transmits the location to a user. The RFID transmitter couples to any personal device and broadcasts a unique ID. The nearest RFID reader(s) receive the unique ID and alert a server in communication with the network of RFID readers. The server calculates the distance of the RFID transmitter from each RFID reader receiving the unique ID. The server triangulates the location of the RFID transmitter when three or more RFID readers are receiving the unique ID. The server then securely transmits the location of the RFID transmitter to the user of the portable device. The user receives the transmission through a secure receiver.
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