Patent ID: 8330606
Filing Date: 2012-12-11
Classification: H05K

Abstract:
1. A secure data entry device comprising: a housing; a keypad mounted in said housing and including a plurality of protruding selectably depressible keys; anti-tampering grid tearing elements associated with said keys and operative to tear a flexible, tearable anti-tampering grid upon extraction of a key from said keypad; tampering alarm indication circuitry; and at least one electrical conductor located in said housing in operative association with said keypad, said at least one electrical conductor being formed on said flexible, tearable, anti-tampering grid, said flexible, tearable anti-tampering grid being formed of a multiplicity of interconnected anti-tampering electrical conductors associated with a flexible substrate which is torn as the result of extraction of at least one of said plurality of protruding selectably depressible keys, said at least one electrical conductor being coupled to said tampering alarm indication circuitry and being arranged such that extraction of at least one of said plurality of protruding selectably depressible keys from said keypad results in at least one break in said at least one electrical conductor, which causes said tampering alarm indication circuitry to provide a tampering alarm indication.