Anti-spoofing elastomer membrane for secure electronic modules
A tamper-proof elastomeric membrane device for secure electronic housings. At least one button is molded in this elastomeric membrane. The button is under pressure when the housing is closed to act on an electronic circuit, and the button is idle when the housing is open. The device can be applied to secure housings, such as in particular confidential code housings, whose physical integrity is sought to be guaranteed by a device for detecting opening.
1. A tamper-proof device for a secure electronic housing configured to detect an attempt to open the housing, the housing including an electronic circuit, said device comprising:
an elastomeric membrane comprising keypad buttons; and
at least one button molded in the elastomeric membrane, wherein the at least one button is under pressure when the housing is closed to contact said electronic circuit, and the at least one button does not contact the electronic circuit when the housing is open.
2. The tamper-proof device as claimed in claim 1 , wherein an action between the at least one button and the electronic circuit is effected by electrical contact between a conducting part belonging to the at least one button and conducting tracks belonging to the circuit.
3. The tamper-proof device as claimed in claim 1 , wherein the elastomeric membrane is placed in contact with at least one mechanical element acting on the at least one button for detecting opening when the housing is closed, and no longer acting on top when the housing is open.
4. The tamper-proof device as claimed in claim 1 , wherein the elastomeric membrane is placed between a lid and the electronic circuit.
5. The tamper-proof device as claimed in claim 1 , wherein the secure electronic housing is a confidential code housing.
6. The tamper-proof device as claimed in claim 1 , wherein the secure electronic housing is an electronic payment terminal.
7. The tamper-proof device as claimed in claim 1 , wherein the secure electronic housing is electronic purse reader.
8. The tamper-proof device as claimed in claim 1 , wherein the secure electronic housing is a communication terminal.
9. The tamper-proof device as claimed in claim 1 , wherein the secure electronic housing is a communication terminal including a chip card reader.
10. The device of claim 1 , the elastomeric membrane including a top surface and a bottom surface, and the at least one button including a first portion and a second portion, the first portion configured to extend above the top surface in a first state, and the second portion configured to extend below an entirety of the bottom surface and to contact the electronic circuit in a second state.
11. An electronic device configured to detect an attempt to open a housing including an electronic circuit, the device comprising:
a membrane including an elastomeric material, the membrane comprising keypad buttons and including at least one button configured to contact the electronic circuit when the housing is closed and configured to not contact the electronic circuit when the housing is open.
12. The device of claim 11 , the at least one button including a conductive portion adapted to contact conducting tracks of the electronic circuit, wherein an action between the at least one button and the electronic circuit is effected by electrical contact between the conductive portion and the conducting tracks.
13. The device of claim 11 , the membrane contacting at least one mechanical element, the at least one mechanical element configured to apply pressure to the at least one button when the housing is closed and configured to not apply pressure to the at least one button when the housing is open.
14. The device of claim 11 , the membrane including a top surface and a bottom surface, and the at least one button including a first portion and a second portion, the first portion configured to extend above the top surface in a first state, and the second portion configured to extend below an entirety of the bottom surface and to contact the electronic circuit in a second state.
15. An electronic device configured to detect an attempt to open a housing including an electronic circuit, the device comprising:
a membrane including an elastomeric material, the membrane including keypad key buttons and means for actuating, the means for actuating contacting the electronic circuit when the housing is closed and not contacting the electronic circuit when the housing is open.
16. The device of claim 15 , the means for actuating including means for conducting, the means for conducting contacting conducting tracks of the electronic circuit, wherein an action between the conductive means and the electronic circuit is effected by electrical contact between the conductive means and the conducting tracks.
17. The device of claim 15 , the membrane contacting at least one mechanical element, the at least one mechanical element configured to apply pressure to the means for actuating when the housing is closed, configured to not apply pressure to the means for actuating when the housing is open.
18. The device of claim 15 , the membrane including a top surface and a bottom surface, and the means for actuating including a first means for deforming and a second means for deforming, the first means for deforming receiving a deforming pressure in a first state, and the second means for deforming extending beyond an entirety of the bottom surface to contact the electronic circuit in a second state.