SECURED KEYPAD DEVICES
5 Assignments
0 Petitions
Accused Products
Abstract
A data entry device including a housing including a top housing portion including key apertures, a plurality of data entry keys mounted in the housing to have data entry key depression travel paths in the housing, the plurality of data entry keys being associated with a substrate, which is disposed below the top housing portion and anti-tampering electrical conductors arranged between the top housing portion and the substrate thereby to prevent unauthorized access to the substrate.
13 Citations
23 Claims
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1-18. -18. (canceled)
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19. A data entry device comprising:
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a housing including a top housing portion including key apertures; a key assembly including a plurality of depressible keys, which partially extend through said key apertures, and a corresponding plurality of key contacts which do not underlie said key apertures; and a protective partial enclosure at least partially surrounding said key assembly, said protective partial enclosure including at least one anti-tampering grid formed of a multiplicity of interconnected anti-tampering electrical conductors and being formed with grid apertures aligned with said key apertures for permitting displacement of said depressible keys therethrough; said key contacts underlying said at least one anti-tampering grid; and said key assembly being constructed such that said key contacts define an open electrical circuit when a key is depressed and define a closed electrical circuit when a key is not depressed. - View Dependent Claims (20, 21, 22, 23)
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Specification