Tamper-evident RFID tag and method thereof
AssigneeEM Microelectronic-Marin SA
InventorsPierre Muller, Yves Dupraz, Alexis Durand, Gordon Limond
Life of this patent
Estimating the term…
Abstract
A tamper-evident RFID Tag (100) and a method for manufacturing it. The method (500) may provide (510) at least one protection layer (151) before being cured (520) such as to turn the at least one protection layer (151) into at least one degradable layer (155), and to prevent an assembly or a reassembly of the tamper-evident RFID Tag (100) after any attempt of harvesting of the tamper-evident RFID Tag (100).
Claims13
A method for manufacturing a tamper-evident RFID Tag, said method comprising:
- providing a protection layer deposited on an integrated circuit that has a primary IC contact and a secondary IC contact;
- curing said protection layer between 100° C. and 200° C. for between 2 minutes and 45 minutes such as to turn said protection layer into a degradable layer;
- and
- providing a main electrical contact deposit comprising:
- depositing a first electrical contact on said degradable layer, and
- depositing a second electrical contact on said degradable layer,
- wherein said first electrical contact comprises a first proximal electrical contact portion and a first distal electrical contact portion, and said second electrical contact comprises a second proximal electrical contact portion and a second distal electrical contact portion
- wherein said depositing the first electrical contact on said degradable layer comprises:
- configuring the first proximal contact portion to contact said primary IC contact, and
- configuring said first distal electrical contact portion to be a predetermined
- distance from said secondary IC contact, and wherein said depositing the second electrical contact on said degradable layer comprises:
- configuring the second proximal contact portion to contact said secondary IC contact, and
- configuring said second distal electrical contact portion to be a predetermined distance from said primary IC contact.
A tamper-evident RFID Tag comprising an integrated circuit comprising a degradable layer, a primary IC contact and a secondary IC contact provided on said integrated circuit, and:
- a first electrical contact provided on said degradable layer:
- said first electrical contact comprising:
- a first proximal electrical contact portion configured to contact said primary IC contact, and
- a first distal electrical contact portion configured to be a predetermined distance from said secondary IC contact;
- and
- a second electrical contact provided on said degradable layer:
- said second electrical contact comprising:
- a second proximal electrical contact portion configured to contact said secondary IC contact, and
- a second distal electrical contact portion configured to be a predetermined distance from said primary IC contact.
Dependencies are inferred from the claim text.