Electromagnetic identification label for anti-counterfeiting, authentication, and tamper-protection
First Claim
1. A radio frequency identification label comprising:
- a substrate material layer; and
a tag circuit capable of producing an electromagnetic signal containing information; and
at least one antenna element for coupling the tag circuit to an external tag reader device; and
at least one defined marker region of electrically conductive material that is distinct from the antenna elements and electrically coupled to the tag circuit; and
the tag circuit arranged such that all or part of its information is dependent on the electrical properties of the marker region.
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Accused Products
Abstract
A radio frequency identification label is comprised of a tag circuit 310 electrically coupled to a defined marker region 330 such that the information generated by the tag circuit is dependent on the electronic properties of the marker region 330. The ID information conveyed to an external tag reader is thus a combination of fixed data intrinic to the tag circuit 310 plus a portion of data that is dependent on the electronic properties of the marker region. The marker region 330 can be comprised of various materials with complex structure, such as woven cloth or printed electrically conductive inks, such that the ID code transmitted by the label is thus more difficult to reproduce or to counterfeit. In addition, the marker region 330 can also be arranged to have electrical coupling to the object onto which the label is affixed, thus creating an electronic ID code that is also dependent on the electronic properties of the tagged object itself.
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Citations
26 Claims
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1. A radio frequency identification label comprising:
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a substrate material layer; and
a tag circuit capable of producing an electromagnetic signal containing information; and
at least one antenna element for coupling the tag circuit to an external tag reader device; and
at least one defined marker region of electrically conductive material that is distinct from the antenna elements and electrically coupled to the tag circuit; and
the tag circuit arranged such that all or part of its information is dependent on the electrical properties of the marker region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification