Dual transponder radio frequency identification
View Patent ↗Embodiments are discussed herein related to radio frequency identification (“RFID”) and, more particularly, to systems, methods, apparatuses, computer readable media products and other means for integrating two transponders into a tag, where each transponder functions independent from and does not couple with the other transponder. In some embodiments, one of the transponders can be a near field RFID transponder and the other a far field transponder. The near field RFID transponder can be used to, among other things, authenticate the far field RFID transponder. In some embodiments, the far field RFID transponder can be encoded to transmit generic information, while the near field RFID transmits more detailed or user-specific information. Additionally, in some embodiments, the near field and far field RFID transponders can operate in accordance with the same wireless protocol and include their own circuitry and antenna.
1. A radio frequency identification (“RFID”) tag configured to communicate wirelessly with a RFID reader, the RFID tag comprising:
a far field (“FF”) transponder, comprising:
FF circuitry configured to access FF data; and
a FF antenna configured to define a FF read range;
a near field (“NF”) transponder, comprising:
NF circuitry configured to access NF data; and
a NF antenna configured to define a NF read range that is smaller than the FF read range; and
a substrate; and wherein:
the FF transponder and the NF transponder are both configured to communicate using the same wireless communication protocol;
the FF antenna of the FF transponder comprises a slot antenna formed on the substrate, the slot antenna defining a nonconductive region of the FF transponder; and
the NF antenna of the NF transponder comprises a loop antenna formed on the substrate at the nonconductive region of the FF transponder.
2. The RFID tag of claim 1 , wherein at least a portion of the FF data is transmitted substantially simultaneously as at least a portion of the NF data.
3. The RFID tag of claim 1 , wherein the wireless communication protocol is in compliance with at least one of an EPCglobal Generation 1 standard, an EPCglobal Generation 2 standard, and an ISO/IEC standard.
4. The RFID tag of claim 1 , wherein the FF transponder and the NF transponder are both passive RFID transponders.
5. The RFID tag of claim 1 , wherein the FF data includes generic data relative to the NF data.
6. The RFID tag of claim 1 , wherein the FF data is different than the NF data.
7. The RFID tag of claim 1 , wherein the NF data includes user-specific data.
8. The RFID tag of claim 7 , wherein the user-specific data has a species relationship to the FF data.
9. The RFID tag of claim 8 , wherein the FF data comprises access data that is configured to authorize physical access to an area and the user-specific data comprises transaction data that is configured to authorize a financial transaction within the area.
10. The RFID tag of claim 1 , wherein the NF data includes an unique NF identifier and the FF data includes an unique FF identifier.
11. The RFID tag of claim 10 , wherein the unique NF identifier and the unique FF identifier are readable near simultaneously by a reader positioned within the NF read range.
12. The RFID tag of claim 1 , wherein the NF read range is less than two meters.
13. The RFID tag of claim 1 , wherein the FF read range is more than nine meters.
14. The RFID tag of claim 1 , wherein the FF data and the NF data are used to authenticate the RFID tag.
15. The RFID tag of claim 1 further comprising:
a memory, wherein the NF data is encrypted and stored in the memory.
16. The RFID tag of claim 1 further comprising:
a memory, wherein the FF data is encrypted and stored in the memory.
17. The RFID tag of claim 16 , wherein the FF data is encrypted based on an algorithm that uses the NF data as an input.
18. The RFID tag of claim 1 further comprising:
a memory, wherein the FF data and the NF data are combined and stored in memory.
19. The RFID tag of claim 1 further comprising:
a NF storage device; and
a FF storage device, wherein the FF storage device lacks any information related to the NF transponder.
20. The RFID tag of claim 1 , wherein the FF transponder and the NF transponder are both configured to communicate with the RFID reader by modulating an interrogation signal received from the RFID reader.