Method, system, and apparatus for RFID removal detection
First Claim
Patent Images
1. A tamper indicating RFID label, comprising:
- an RFID chip having at least a first terminal and a second terminal;
at least one antenna coupled to the RFID chip; and
a conductive material forming a loop coupled to the RFID chip that influences a response signal sent from the RFID label when it is read such that when the conductive loop changes from a closed path to an open path one or more digital bits are altered, andwherein the conductive loop is configured such that,a first end of the conductive loop is coupled to the first terminal of the RFID chip,a second end of the conductive loop is coupled to the second terminal of the RFID chip, andportions of the conductive loop near the first end of the conductive loop and the second end of the conductive loop are configured such that, between the portions, there is non-straight line access from an area outside the RFID label to a gap between the first terminal and the second terminal of the RFID chip.
2 Assignments
0 Petitions
Accused Products
Abstract
According to one exemplary embodiment, an apparatus, system and method for forming RFID labels is disclosed. The RFID labels can include an RFID chip, at least one antenna element and at least one conductive material. The RFID chip may then transmit desired signals based upon a coupling of the conductive material to the RFID chip.
-
Citations
18 Claims
-
1. A tamper indicating RFID label, comprising:
-
an RFID chip having at least a first terminal and a second terminal; at least one antenna coupled to the RFID chip; and a conductive material forming a loop coupled to the RFID chip that influences a response signal sent from the RFID label when it is read such that when the conductive loop changes from a closed path to an open path one or more digital bits are altered, and wherein the conductive loop is configured such that, a first end of the conductive loop is coupled to the first terminal of the RFID chip, a second end of the conductive loop is coupled to the second terminal of the RFID chip, and portions of the conductive loop near the first end of the conductive loop and the second end of the conductive loop are configured such that, between the portions, there is non-straight line access from an area outside the RFID label to a gap between the first terminal and the second terminal of the RFID chip. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A method of preventing tampering to products having RFID tags, comprising:
-
sending a first signal from an RFID chip of an RFID label when a coupling between the RFID chip and a conductive material is intact, the RFID label includes the RFID chip, at least one antenna coupled to the RFID chip, and the conductive material that forms a loop that is coupled to the RFID chip at a first terminal and a second terminal of the RFID chip, the loop configured to provide only non-direct access to the RFID chip from outside the RFID label and only between the first and second terminals of the RFID chip; and sending a second signal from the RFID chip when the coupling between the RFID chip and at least a portion of the conductive material is not intact such that when the conductive loop changes, from a closed path to an open path, one or more digital bits are altered. - View Dependent Claims (16, 17)
-
-
18. A method of forming a tamper-resistant RFID tag, comprising:
-
disposing an RFID chip on a substrate; disposing at least a first antenna element on the substrate; coupling the at least first antenna element to the RFID chip; disposing a conductive loop on the substrate; and connecting a first portion of the conductive loop to a first terminal on the RFID chip and connecting a second portion of the conductive loop to a second terminal on the RFID chip in such a manner that there is no straight-line access from an area outside the RFID tag to the RFID chip, and access is available to the RFID tag only via a gap between the first terminal and the second terminal, and wherein the RFID chip and conductive loop are configured such that when the conductive loop changes from a closed path to an open path one or more digital bits are altered.
-
Specification