Tamper resistant pin entry apparatus
First Claim
1. A tamper resistant PIN entry apparatus comprising:
- a key module including a button provided substantially on the front of the key module and a first rod formed substantially on the rear of the key module;
a key scan board including a first contact for the button, a second contact for the first rod and a third contact, wherein the first and the second contacts are formed substantially on the front of the key scan board and the third contact is formed substantially on the rear of the key scan board;
a rear case coupled with the key module, including a second rod for the third contact; and
an electric circuit section for making a stored information unreadable in accordance with a change of an electric current or voltage at the second contact or the third contact, the change caused by reduction or absence of pressing force by the first rod or the second rod.
1 Assignment
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Accused Products
Abstract
Disclosed is a tamper resistant PIN entry apparatus for input of a key and for encryption of a password in a cash transaction machine. The PIN entry apparatus supplies the electric power to a memory of an electric circuit section, in such a manner that a first rod and a second rod of a rear case connect contacts of a key scan board, wherein the first rod is protruded on the rear of a key module including a button provided substantially on the front of the key module and the second rod of the rear case is coupled with the rear of the key module. At this time, in case that the rear case is removed from the key module or damaged, thereby changing the location of any one of the first and the second rods at the contact, the electric circuit section detects the event and destroys the memory itself physically. Otherwise, the electric circuit section makes information stored in the memory physically or softwarely unreadable, thereby preventing the leakage of the information.
931 Citations
16 Claims
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1. A tamper resistant PIN entry apparatus comprising:
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a key module including a button provided substantially on the front of the key module and a first rod formed substantially on the rear of the key module; a key scan board including a first contact for the button, a second contact for the first rod and a third contact, wherein the first and the second contacts are formed substantially on the front of the key scan board and the third contact is formed substantially on the rear of the key scan board; a rear case coupled with the key module, including a second rod for the third contact; and an electric circuit section for making a stored information unreadable in accordance with a change of an electric current or voltage at the second contact or the third contact, the change caused by reduction or absence of pressing force by the first rod or the second rod. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification