Tamper-indicating radio frequency identification antenna and sticker, a radio frequency identification antenna, and methods of using the same
First Claim
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1. A tamper-indicating radio frequency identification device, comprising:
- a substrate including a first major surface and a second major surface opposite the first major surface; and
a radio frequency identification antenna attached to the first major surface of the substrate, wherein said antenna comprises densified metal powder.
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Abstract
A tamper-indicating radio frequency identification device made of densified metal powder and to a sticker including the same device. The present invention also relates to radio frequency identification antenna made of densified metal powder and to a sticker including the same antenna. The present invention also relates to methods of indicating that a radio frequency identification antenna or sticker has been tampered with.
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Citations
79 Claims
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1. A tamper-indicating radio frequency identification device, comprising:
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a substrate including a first major surface and a second major surface opposite the first major surface; and a radio frequency identification antenna attached to the first major surface of the substrate, wherein said antenna comprises densified metal powder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A tamper-indicating radio frequency identification sticker, comprising:
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a substrate including a first major surface and a second major surface opposite the first major surface; and a radio frequency identification antenna attached to the first major surface of the substrate, wherein said antenna comprises densified metal powder; a first integrated circuit attached to the antenna; and a first layer of adhesive attached to the substrate. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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50. A method of indicating a radio frequency identification sticker has been tampered, comprising steps of:
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attaching a tamper-indicating radio frequency identification sticker to a first surface, wherein the tamper-indicating radio frequency identification sticker, comprises; a substrate including a first major surface and a second major surface opposite the first major surface; a radio frequency identification antenna attached to the first major surface of the substrate, wherein said antenna comprises densified metal powder; a first integrated circuit attached to the antenna; and a first layer of adhesive attached to the substrate; sending a signal to the tamper-indicating radio frequency identification sticker attached to the first surface; receiving a response from the antenna; removing the tamper-indicating radio frequency identification sticker from the first surface; and sending the signal to the tamper-indicating radio frequency identification sticker and not receiving a response from the antenna. - View Dependent Claims (51, 52, 53)
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54. The method of indicating a radio frequency identification sticker has been tampered, comprising the steps of:
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attaching a tamper-indicating radio frequency identification sticker to a first surface, wherein the tamper-indicating radio frequency identification sticker, comprises; a substrate including a first major surface and a second major surface opposite the first major surface; a radio frequency identification antenna attached to the first major surface of the substrate, wherein said antenna comprises densified metal powder; a first integrated circuit attached to the antenna; and a first layer of adhesive attached to the substrate; measuring a first resistance in the antenna; bending the tamper-indicating radio frequency identification sticker less than a radius of 25 mm; and measuring a second resistance in the antenna that is higher than the first resistance of the antenna. - View Dependent Claims (55, 56, 57)
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58. A method of indicating a radio frequency identification sticker has been tampered, comprising the steps of:
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attaching a tamper-indicating radio frequency identification sticker to a first surface, wherein the tamper-indicating radio frequency identification sticker, comprises; a substrate including a first major surface and a second major surface opposite the first major surface; a radio frequency identification antenna attached to the first major surface of the substrate, wherein said antenna comprises densified metal powder; a first integrated circuit attached to the antenna; and a first layer of adhesive attached to the substrate; measuring a first conductivity in the antenna; bending the tamper-indicating radio frequency identification sticker less than or equal to a radius of 25 mm; and measuring a second conductivity in the antenna that is lower than the first conductivity of the antenna. - View Dependent Claims (59, 60, 61)
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62. A method of indicating a radio frequency identification sticker has been tampered, comprising the steps of:
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attaching a tamper-indicating radio frequency identification sticker to a first surface, wherein the tamper-indicating radio frequency identification sticker, comprises; a substrate including a first major surface and a second major surface opposite the first major surface; a radio frequency identification antenna attached to the first major surface of the substrate, wherein said antenna comprises densified metal powder; a first integrated circuit attached to the antenna; and a first layer of adhesive attached to the substrate; measuring a first conductivity in the antenna; bending the tamper-indicating radio frequency identification sticker less than or equal to a radius of 25 mm; and measuring a second conductivity that indicates that the antenna is nonconductive. - View Dependent Claims (63, 64, 69)
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65. A method of indicating a radio frequency identification sticker has been tampered, comprising the steps of:
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attaching a tamper-indicating radio frequency identification sticker to a first surface, wherein the tamper-indicating radio frequency identification sticker, comprises; a substrate including a first major surface and a second major surface opposite the first major surface; a radio frequency identification antenna attached to the first major surface of the substrate wherein said antenna comprises densified metal powder; a first integrated circuit attached to the antenna; and a first layer of adhesive attached to the substrate; bending the tamper-indicating radio frequency identification sticker less than or equal to a radius of 25 mm; and forming a fracture in the radio frequency identification antenna. - View Dependent Claims (66, 67)
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68. A method of indicating a radio frequency identification sticker has been tampered, comprising the steps of:
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attaching a tamper-indicating radio frequency identification sticker to a first surface, wherein the tamper-indicating radio frequency identification sticker, comprises; a substrate including a first major surface and a second major surface opposite the first major surface; a first radio frequency identification antenna attached to the first major surface of the substrate, wherein said antenna comprises densified metal powder; a first integrated circuit attached to the antenna; a second integrated circuit attached to the substrate, wherein the second integrated circuit comprises a second antenna; and a first layer of adhesive attached to the substrate; sending a signal to the tamper-indicating radio frequency identification sticker attached to the first surface; receiving a response from the first antenna and from the second antenna; removing the tamper-indicating radio frequency identification sticker from the first surface; sending the signal to the tamper-indicating radio frequency identification sticker; and receiving a signal from the second antenna and not receiving a response from the first antenna.
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70. A tamper-indicating radio frequency identification sticker, comprising:
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a substrate including a first major surface and a second major surface opposite the first major surface, wherein the substrate is selected from the group consisting of paper and materials that are at least about 10% compressible, and wherein the materials that are at least 10% compressible are selected from the group consisting of microporous materials, nonwoven materials and woven materials; and a radio frequency identification loop antenna attached to the first major surface of the substrate, wherein said antenna comprises densified metal powder, wherein the densified metal powder is selected from the group consisting of copper, tin, lead, silver, gold, platinum, aluminum, nickel, iron, steel, zinc and alloys and combinations thereof; and wherein the metal powder comprises metal particles in the shape of spheres, oblongs, and polyhedra; a first integrated circuit attached to the antenna; and a first layer of adhesive attached to the substrate; wherein the antenna responds to a signal sent a distance greater than 15 cm from the tamper-indicating radio frequency identification sticker, and wherein after the tamper-indicating radio frequency identification sticker is bent equal to or less than a radius of 25 mm, the tamper-indicating radio frequency identification loop antenna does not respond to the signal and the antenna comprises a fracture that is not visible to the naked eye.
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71. A radio frequency identification antenna, comprising:
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a substrate including a first major surface and a second major surface opposite the first major surface; and a radio frequency identification antenna attached to the first major surface of the substrate, wherein said antenna comprises densified metal powder. - View Dependent Claims (72, 73, 74, 75, 76, 77, 78, 79)
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Specification