Method and apparatus for dynamically changed identifiers in an RFID tag device
First Claim
Patent Images
1. A radio frequency identification (RFID) tag device that provides a dynamic identifier upon being read by an RFID reader, comprising:
- a RFID interface including a radio transceiver that transmits, according to a selected protocol, a dynamic identifier in response to receiving a read signal;
a dynamic identification (ID) controller coupled to the RFID interface that selects the protocol based on a protocol indication and provides the dynamic identifier to the RFID interface, wherein the identifier is only stored in a volatile memory of the RFID tag device; and
an associated device interface coupled to the dynamic ID controller over which the dynamic ID controller receives the identifier and the protocol indication from an associated device, and power to power the RFID tag device, wherein the associated device provides power to the RFID tag device to perform a transaction and removes power in response to the RFID tag device completing the transaction thereby erasing the dynamic identifier from the volatile memory.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and apparatus for an RFID tag device that uses dynamic identifiers for transactions rather than a fixed identifier. An associated device communicates with the RFID tag device and obtains dynamic identifiers for transactions and provides the dynamic identifiers to the RFID tag device. The RFID tag device is protocol-agile and can be configured to operate using different protocols to complete transactions.
10 Citations
8 Claims
-
1. A radio frequency identification (RFID) tag device that provides a dynamic identifier upon being read by an RFID reader, comprising:
-
a RFID interface including a radio transceiver that transmits, according to a selected protocol, a dynamic identifier in response to receiving a read signal; a dynamic identification (ID) controller coupled to the RFID interface that selects the protocol based on a protocol indication and provides the dynamic identifier to the RFID interface, wherein the identifier is only stored in a volatile memory of the RFID tag device; and an associated device interface coupled to the dynamic ID controller over which the dynamic ID controller receives the identifier and the protocol indication from an associated device, and power to power the RFID tag device, wherein the associated device provides power to the RFID tag device to perform a transaction and removes power in response to the RFID tag device completing the transaction thereby erasing the dynamic identifier from the volatile memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
Specification