Digital signature collection and authentication
First Claim
1. A method for authenticating a digital representation of a signature, the method comprising:
- at a first computer, generating a digital representation of a new signature and packetizing the digital representation of the new signature; and
sending the packetized digital representation of the new signature to a second computer, to enable the second computer to authenticate the new signature by comparing the new signature with a digital representation of a known signature, wherein;
the digital representation of the new signature comprises shape data, speed data, and pressure data;
the shape data for the new signature identifies a signature shape for the new signature, based on ultrasonic signals associated with a tip of an implement used to form the new signature;
the speed data for the new signature identifies different velocities or accelerations of the tip of the implement used to form the new signature at different times during creation of the new signature;
the pressure data for the new signature identifies different amounts of pressure used at different times during creation of the new signature; and
the operation of packetizing the digital representation of the new signature comprises including, as part of the digital representation of the new signature, at least one item from the group consisting of (a) location data for the first computer and (b) identity data for the first computer.
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Accused Products
Abstract
A digital signature collection and authentication system includes an ink pen having an ultrasonic transmitter that transmits ultrasonic energy to a plurality of ultrasonic receivers. A computer triangulates the location of the pen versus time to generate the signature shape, and to generate velocity and acceleration data. The pen also includes a pressure sensitive tip to record pressure applied to the pen tip. The pen also includes a higher frequency burst transmitter useful to generate a time reference, and to transmit the pressure information. The computer packetizes the shape, velocity, acceleration, and pressure data with a time stamp and an IP address or phone number, encrypts the packet and sends it to a host computer for authentication. Other embodiments are described and claimed.
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Citations
20 Claims
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1. A method for authenticating a digital representation of a signature, the method comprising:
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at a first computer, generating a digital representation of a new signature and packetizing the digital representation of the new signature; and sending the packetized digital representation of the new signature to a second computer, to enable the second computer to authenticate the new signature by comparing the new signature with a digital representation of a known signature, wherein; the digital representation of the new signature comprises shape data, speed data, and pressure data; the shape data for the new signature identifies a signature shape for the new signature, based on ultrasonic signals associated with a tip of an implement used to form the new signature; the speed data for the new signature identifies different velocities or accelerations of the tip of the implement used to form the new signature at different times during creation of the new signature; the pressure data for the new signature identifies different amounts of pressure used at different times during creation of the new signature; and the operation of packetizing the digital representation of the new signature comprises including, as part of the digital representation of the new signature, at least one item from the group consisting of (a) location data for the first computer and (b) identity data for the first computer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for authenticating a digital representation of a signature, the method comprising:
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at a first computer, receiving a digital representation of a new signature from a second computer; and comparing the digital representation of the new signature with a predetermined digital representation of a known signature to determine whether the new signature matches the known signature, wherein; the digital representation of the new signature comprises shape data pressure data, and at least one item from the group consisting of (a) location data for the second computer and (b) identity data for the second computer; the predetermined digital representation of the known signature comprises shape data, pressure data, at least one item from the group consisting of (a) location data and (b) identity data; the shape data for the new signature identifies a signature shape for the new signature, based on ultrasonic signals associated with a tip of an implement used to form the new signature; the shape data for the known signature identifies a signature shape for the known signature; the pressure data for the new signature identifies different amounts of pressure used at different times during creation of the new signature; the pressure data for the known signature identifies different amounts of pressure used at different times during creation of the known signature; and the operation of comparing the digital representation of the new signature with the predetermined digital representation of the known signature to determine whether the new signature matches the known signature comprises; using the pressure data that identifies different amounts of pressure used at different times during creation of the new signature and the pressure data that identifies different amounts of pressure used at different times during creation of the known signature to determine whether the new signature matches the known signature. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification