Computer-based training system with student verification
First Claim
1. A signature verification system for use as part of a computer system to ascertain the identity of a user thereof, said verification system comprising:
- (a) means for registering a machine-readable form a representation of said user'"'"'s signature;
(b) means for requesting said user to register said signature at a random time during a session of computer operation;
(c) means for discerning by computer at least one discriminator datum of said signature;
(d) means for storing at least two said representations of signatures registered at different times and respectively corresponding discriminator data; and
(e) means for comparing discriminator data from two different signatures to determine whether the same person caused the respective signatures to be registered.
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Accused Products
Abstract
A signature verification system to accompany a computer-based training system to monitor the identity of the training system user. Using a stylus and digitizing pad as a computer input device, the verification system accepts a user'"'"'s signature made under supervised conditions, and the computer generates various discriminator data associated with the singature, such as time to write signature, signature density and signature size. The verified, supervised signature and associated discriminator data are stored in encrypted format for security against tampering. During sessions on the training system the user is required to enter a signature at random times. Again, corresponding discriminator data for these session signatures is generated by the computer, and the session signature(s) and associated corresponding discriminator data are also likewise encrypted and stored. At a later time, e.g., after the user has completed the training course, the discriminator data corresponding to the verified signature is compared to the discriminator data corresponding to a session signature, and any anomalous session signatures detected are flagged to alert the training course administration personnel to make visual comparison of the respective signatures.
94 Citations
31 Claims
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1. A signature verification system for use as part of a computer system to ascertain the identity of a user thereof, said verification system comprising:
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(a) means for registering a machine-readable form a representation of said user'"'"'s signature; (b) means for requesting said user to register said signature at a random time during a session of computer operation; (c) means for discerning by computer at least one discriminator datum of said signature; (d) means for storing at least two said representations of signatures registered at different times and respectively corresponding discriminator data; and (e) means for comparing discriminator data from two different signatures to determine whether the same person caused the respective signatures to be registered. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for verifying the identity of a person participating in course sessions on a computer-based training system comprising:
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(a) registering a machine-readable form a representation of a verified signature of an authorized person; (b) discerning at least one selected discriminator datum of said verified signature; (c) storing said representation of said verified signature and said selected discriminator datum of said verified signature; (d) requesting that a user of said training system register a session signature, said request occurring at a random time during said training session; (e) registering in machine readable form a representation of the session signature; (f) discerning said selected discriminator datum of said session signature; (g) storing said representation of said session signature and said selected discriminator datum of said session signature; and (h) comparing respective selected discriminator data of said verified signature and said session signature. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A method for verifying signatures of students using a computer-based training system, comprising:
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(a) registering in machine-readable form a representation of a verified signature of the student; (b) discerning one or more selected discriminator data pertaining to said verified signature; (c) storing said verified signature and associated discriminator data; (d) executing a software program that provides a session of instruction to the student; (e) requesting that the student make a session signature, said request occurring at an interval during the session; (f) registering in machine-readable form a representation of said session signature; (g) discerning one or more discriminator data of said session signature; (h) storing said representation of said session signature and associated discriminator data; and (i) comparing respective selected discriminator data of said verified signature and said session signature so as to determine whether said verified signature and said session signature were made by the same person. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. A computer based instruction system, comprising:
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(a) a computer; (b) a software program that operates on said computer and provides a course of instruction to a student; (c) signature input means for requesting a student signature, digitizing said signature and transmitting said signature to said computer; (d) a data storage means; (e) log means for logging from said computer into said storage means signatures that are input by said student; and (f) comparison means, including a display, for accessing two or more of said logged signatures and comparing their respective similarities and differences, whereby the attendance of the student during said instruction course may be verified. - View Dependent Claims (29, 30)
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31. A method of comparing handwritten signatures, comprising the step of comparing the density ratios associated with a pair of respective signatures, said density ratio being defined as the ratio of a total number of data points within a predetermined area containing a signature to be compared to the number of data points associated with the line or lines that represent said signature.
Specification