Browse Prior Art Database

Security Switch Mechanism

IP.com Disclosure Number: IPCOM000131670D
Original Publication Date: 2005-Nov-14
Included in the Prior Art Database: 2005-Nov-14
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Abstract

This disclosure is one of the security protection mechanisms for PED(Pin Entry Device ,Pin:Personal Identification Number). In many cases,a tactile switch is located in a PED and used for detecting the cover being opened. This mechanism with a simple plate can obstruct making the bypass to the switch and improve the security function of PED.

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Security Switch Mechanism

This disclosure is one of the security protection mechanisms for PED(Pin Entry Device ,Pin:Personal Identification Number).

In many cases,a tactile switch is located in a PED and used for detecting the cover being opened. This mechanism with a simple plate can obstruct making the bypass to the switch and improve the security function of PED.

PED which is installed in POS terminal or ATM have to provide a PIN data protection mechanism. Usually,a tactile switch is mounted on the circuit board in a PED and it is normally pushed by a cover as Fig.1. If the cover is opened, the switch is turned to be free and all PIN data is erased at the signal of the switch.

However, in case the cover is drilled and some holes are made near the switch(Fig.2), the terminals of the switch may be bypassed by some cables. In this way,the protection has some chances to be invalid.

                Fig.1 Fig.2

The mechanism of this disclosure is shown in Fig.3. The plate is put between the cover and switch head and is settled by small ribs on the cover not fixed by glue or adhesive. Height of the boss of this plate is set to push the switch to ON. When the cover is drilled, a tip of drill bite the plate(Fig.4) and then blow it away. Once the plate comes off ,the switch is turned off and PIN data is erased.

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       Fig.3 Fig.4

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