Secure PIN entry device
First Claim
1. A security check system operative to check at least part of a data entry device for the presence of an unauthorized data eavesdropping element threat, said system comprising:
- an electric field generator for simultaneously generating an electromagnetic field at a first multiplicity of locations in said data entry device; and
mutual capacitance sensing circuitry for sensing mutual capacitance between at least some of said first multiplicity of locations and at least a second multiplicity of locations resulting from said electromagnetic field at each of said first multiplicity of locations, said mutual capacitance sensing circuitry being operative to check at least part of the data entry device for the presence of an unauthorized data eavesdropping element threat in a key entry detection mode using autotuning functionality and in a security scan mode when the autotuning functionality is disabled.
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Accused Products
Abstract
A secure PIN entry device including a PIN entry assembly operative to receive a PIN from a user, a PIN entry prompter operative when actuated to prompt a user to enter a PIN via the PIN entry assembly, a PIN entry prompt security check enabled controller operative to prevent operation of the PIN entry prompter unless a predetermined security check has been successfully completed and security check functionality operative to check at least part of the PIN entry device for the presence of an unauthorized PIN eavesdropping element thereat and to provide an output to the PIN entry prompt security check enabled controller indicating whether the predetermined security check has been successfully completed.
83 Citations
19 Claims
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1. A security check system operative to check at least part of a data entry device for the presence of an unauthorized data eavesdropping element threat, said system comprising:
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an electric field generator for simultaneously generating an electromagnetic field at a first multiplicity of locations in said data entry device; and mutual capacitance sensing circuitry for sensing mutual capacitance between at least some of said first multiplicity of locations and at least a second multiplicity of locations resulting from said electromagnetic field at each of said first multiplicity of locations, said mutual capacitance sensing circuitry being operative to check at least part of the data entry device for the presence of an unauthorized data eavesdropping element threat in a key entry detection mode using autotuning functionality and in a security scan mode when the autotuning functionality is disabled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A security check method for checking at least part of a data entry device for the presence of an unauthorized data eavesdropping element threat, said method comprising:
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simultaneously generating an electromagnetic field at a first multiplicity of locations in said data entry device; and sensing mutual capacitance between at least some of said first multiplicity of locations and at least a second multiplicity of locations resulting from said electromagnetic field at each of said first multiplicity of locations, said sensing mutual capacitance being operative to check at least part of the data entry device for the presence of an unauthorized data eavesdropping element threat in a key entry detection mode using autotuning functionality and in a security scan mode when the autotuning functionality is disabled. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification