CONTACTLESS COMMUNICATION WITH AUTHORIZATION BY HUMAN CONTACT AND VISUAL INDICATOR
First Claim
1. A transponder comprising:
- a resonant circuit that includes an antenna and a capacitor;
a memory;
a contact zone configured to be contacted by a portion of human body;
an enable/disable circuit configured to switch from a first state, in which the enable/disable circuit does not allow the memory to be accessed, to a second state in which the enable/disable circuit allows the memory to be accessed when the resonant circuit of the transponder is contactlessly powered by a reader; and
a first indicator configured to indicate that a portion of human body has contacted the contact zone of the transponder.
1 Assignment
0 Petitions
Accused Products
Abstract
Transponder comprising a resonant circuit, comprising an antenna and a capacitor, and at least one memory, wherein it comprises at least one contact zone for receiving a portion of human body, so that the positioning of a portion of human body on a contact zone modifies the electric circuit of the transponder, capable of switching from a first state in which it does not allow the memory to be read and/or written to a second state in which it allows the memory to be read and/or written when the resonant circuit of the transponder is contactlessly powered by a reader and in that it comprises an indicator which makes it possible to indicate that the positioning of a portion of human body on the contact zone of the transponder is or has been recognized.
14 Citations
24 Claims
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1. A transponder comprising:
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a resonant circuit that includes an antenna and a capacitor; a memory; a contact zone configured to be contacted by a portion of human body; an enable/disable circuit configured to switch from a first state, in which the enable/disable circuit does not allow the memory to be accessed, to a second state in which the enable/disable circuit allows the memory to be accessed when the resonant circuit of the transponder is contactlessly powered by a reader; and a first indicator configured to indicate that a portion of human body has contacted the contact zone of the transponder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A telephone, comprising:
a transponder that includes; a resonant circuit that includes an antenna and a capacitor; a memory; a contact zone configured to be contacted by a portion of human body; an enable/disable circuit configured to switch from a first state, in which the enable/disable circuit does not allow the memory to be accessed, to a second state in which the enable/disable circuit allows the memory to be accessed when the resonant circuit of the transponder is contactlessly powered by a reader; and an indicator configured to indicate that a portion of human body has contacted the contact zone of the transponder. - View Dependent Claims (14, 15, 16, 17)
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18. A system comprising:
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a reader configured to oscillate at a resonance frequency; and a transponder that includes; a resonant circuit having a resonance frequency substantially equal to the resonance frequency of the reader; a memory; a contact zone configured to be contacted by a portion of human body; an enable/disable circuit configured to switch from a first state, in which the enable/disable circuit does not allow the memory to be accessed, to a second state in which the enable/disable circuit allows the memory to be accessed when the resonant circuit of the transponder is contactlessly powered by a reader; and an indicator configured to indicate that a portion of human body has contacted the contact zone of the transponder. - View Dependent Claims (19, 20, 21, 22)
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23. A method of contactless communication between a reader and a transponder, the method comprising:
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transmitting an electromagnetic field by the reader; contactlessly powering the transponder using the electromagnetic field, based on a resonance of the resonant circuit of the transponder, the transponder having a first state in which a memory is inaccessible to the reader; switching to the second state in response to a conductive object being positioned on a contact zone of the transponder; visually indicating a recognition of the positioning of the conductive object on the contact zone of the transponder; interchanging data between the memory of the transponder and the reader while the transponder is in the second state. - View Dependent Claims (24)
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Specification