Secure data entry device
A secure data entry device including a housing having at least one housing element, at least one additional element located within the housing, at least one force sensitive switch, employing at least one force sensitive film, disposed within the housing in force sensing engagement with at least one of the at least one housing element and the at least one additional element and arranged to sense tamper induced displacement thereof relative to at least another one of the at least one housing element and the at least one additional element and to provide an electrical output indicating tampering and a tampering responsive circuit, responsive to the electrical output indicating tampering.
1. A secure data entry device comprising:
a housing, comprising a housing element and a back panel, the housing element having at least one case open switch actuation protrusion;
at least one case open switch actuation responsive displaceable portion located within said housing and having a protrusion that is configured to be engaged by and displaced in a first direction by said at least one case open switch actuation protrusion;
at least one force sensitive switch, employing at least one force sensitive film comprising at least one force sensor, disposed within said housing that is configured to be in engagement with said at least one case open switch actuation responsive displaceable portion when said at least one case open switch actuation responsive displaceable portion is engaged by and displaced in the first direction by said at least one case open switch actuation protrusion and arranged to sense a tamper induced displacement in a second direction of said at least one case open switch actuation responsive displaceable portion and to provide an electrical output indicating tampering, wherein said tamper induced displacement in the second direction causes at least a partial disengagement between said at least one force sensitive switch and said at least one case open switch actuation responsive displaceable portion; and
a tampering responsive circuit, responsive to said electrical output indicating tampering.
2. The secure data entry device according to claim 1 and wherein said at least one force sensitive film comprises a security assembly comprising at least two film layers.
3. The secure data entry device according to claim 2 and wherein said security assembly comprises a flexible printed circuit board (PCB) having formed thereon said at least one force sensor.
4. The secure data entry device according to claim 3 and wherein said security assembly also comprises at least one of the following layers:
a layer overlying said flexible PCB having formed thereon said at least one force sensor;
a flexible PCB on which is formed an anti-tampering protective mesh formed of a multiplicity of interconnected anti-tampering electrical conductors; and
a film having an adhesive coating on an underside thereof.
5. The secure data entry device according to claim 3 and wherein said security assembly also comprises at least two of the following layers:
a layer overlying said flexible PCB having formed thereon said at least one force sensor;
a flexible PCB on which is formed an anti-tampering protective mesh formed of a multiplicity of interconnected anti-tampering electrical conductors; and
a film having an adhesive coating on an underside thereof.
6. The secure data entry device according to claim 3 and wherein said security assembly also comprises the following layers:
a layer overlying said flexible PCB having formed thereon said at least one force sensor;
a flexible PCB on which is formed an anti-tampering protective mesh formed of a multiplicity of interconnected anti-tampering electrical conductors; and
a film having an adhesive coating on an underside thereof.
7. The secure data entry device according to claim 3 and wherein: said security assembly comprises a film having an adhesive coating on an underside thereof; and said film having an adhesive coating on an underside thereof comprises electrical contacts coupled to a lead of said at least one force sensor.
8. The secure data entry device according to claim 3 and wherein said at least one force sensor underlies a tamper responsive displaceable portion which, in the absence of tampering, engages said at least one force sensor with at least a predetermined force.
9. The secure data entry device according to claim 2 and wherein said at least one force sensor underlies a tamper responsive displaceable portion which, in the absence of tampering, engages said force sensor with at least a predetermined force.
10. The secure data entry device according to claim 1 and wherein said at least one force sensor underlies a tamper responsive displaceable portion which, in the absence of tampering, engages said force sensor with at least a predetermined force.
11. The secure data entry device according to claim 1 and wherein the at least one force sensor comprises a plurality of force sensors.