Keypad having tamper-resistant keys

摘要

A tamper resistant keypad includes one or more key assemblies having a resilient key member and a contact. The resilient key member is configured to flex when the key assembly is depressed to allow the contact to close a key press detection circuit on a circuit board to register a key press. A tamper detection switch assembly at least partially surrounds the resilient key member. The tamper detection switch assembly is configured to detect attempts to access the key assembly.

主权项

1. A keypad comprising:
a resilient key member having a contact configured to close a key press detection circuit to register a key press, where the resilient key member is configured to engage with an inner portion of a key; and a tamper detection switch assembly integrated with the resilient key member, the tamper detection switch assembly at least partially surrounding the contact, the tamper detection switch assembly configured to detect an attempt to access the keypad, wherein the tamper detection switch assembly includes an actuator at least partially surrounding the resilient key member, the actuator configured to at least partially flex from a compressed shape to a released shape in response to the attempt to access the keypad.