ATE16136T1 - SYSTEM FOR VERIFYING A SIGNATURE AND METHOD OF PRODUCING A DOCUMENT FOR AN AUTHORIZED USER. - Google Patents

SYSTEM FOR VERIFYING A SIGNATURE AND METHOD OF PRODUCING A DOCUMENT FOR AN AUTHORIZED USER.

Info

Publication number
ATE16136T1
ATE16136T1 AT79101506T AT79101506T ATE16136T1 AT E16136 T1 ATE16136 T1 AT E16136T1 AT 79101506 T AT79101506 T AT 79101506T AT 79101506 T AT79101506 T AT 79101506T AT E16136 T1 ATE16136 T1 AT E16136T1
Authority
AT
Austria
Prior art keywords
documents
signature
disclosed
cryptographic
document
Prior art date
Application number
AT79101506T
Other languages
German (de)
Inventor
George Clifford Sziklai
Original Assignee
Transaction Sciences Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Transaction Sciences Corp filed Critical Transaction Sciences Corp
Application granted granted Critical
Publication of ATE16136T1 publication Critical patent/ATE16136T1/en

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/20—Individual registration on entry or exit involving the use of a pass
    • G07C9/22—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder
    • G07C9/24—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder by means of a handwritten signature
    • G07C9/247—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder by means of a handwritten signature electronically, e.g. by comparing signal of hand-writing with a reference signal from the pass

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Collating Specific Patterns (AREA)
  • Document Processing Apparatus (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

Signature verification systems are disclosed which include documents each of which bears a cryptographic representation of a function of a position-invariant transform of a reference signature of an authorized user thereof. On some of these documents the cryptographic representation is a digital image of a logarithmic function of the Fourier spectrum of the reference signature displayed as an intensity function the pixels of which have been recollocated in accordance with a cryptokey which is represented on the document. Apparatus (24) are disclosed for use in producing such cryptographic representations on documents. Apparatus (36) are disclosed for verifying documents bearing such cryptographic representations and also bearing specimens of the corresponding reference signatures. Methods of signature verification using documents bearing such cryptographic representations and specimens of said reference signatures are also disclosed.
AT79101506T 1978-05-19 1979-05-17 SYSTEM FOR VERIFYING A SIGNATURE AND METHOD OF PRODUCING A DOCUMENT FOR AN AUTHORIZED USER. ATE16136T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US90783678A 1978-05-19 1978-05-19
EP79101506A EP0011671B1 (en) 1978-05-19 1979-05-17 Signature verification system and method of manufacturing a document for an authorized user

Publications (1)

Publication Number Publication Date
ATE16136T1 true ATE16136T1 (en) 1985-11-15

Family

ID=25424722

Family Applications (1)

Application Number Title Priority Date Filing Date
AT79101506T ATE16136T1 (en) 1978-05-19 1979-05-17 SYSTEM FOR VERIFYING A SIGNATURE AND METHOD OF PRODUCING A DOCUMENT FOR AN AUTHORIZED USER.

Country Status (3)

Country Link
EP (1) EP0011671B1 (en)
AT (1) ATE16136T1 (en)
DE (1) DE2967530D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8314889D0 (en) * 1983-05-31 1983-07-06 Rediffusion Computers Ltd Signature verification system
US4835713A (en) * 1985-08-06 1989-05-30 Pitney Bowes Inc. Postage meter with coded graphic information in the indicia
IL104520A0 (en) * 1993-01-26 1993-05-13 Be Eri Printers Monetary instrument and method for verification thereof
GB0321429D0 (en) * 2003-09-12 2003-10-15 Enseal Systems Ltd Check stock security device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3579186A (en) * 1968-06-25 1971-05-18 Burroughs Corp Personal identification method and apparatus
CH555577A (en) * 1972-06-09 1974-10-31 Gretag Ag METHOD AND DEVICE FOR CONVERTING CLEAR GRAPHICAL INFORMATION INTO ENCRYPTED GRAPHICAL INFORMATION AND REVERSE
US3846752A (en) * 1972-10-02 1974-11-05 Hitachi Ltd Character recognition apparatus
DE2653091A1 (en) * 1976-11-23 1978-05-24 Anton Brueckler Verification of signature on identity card - uses digital comparison of optical reading of hand written signature and magnetically stored data

Also Published As

Publication number Publication date
DE2967530D1 (en) 1985-11-21
EP0011671B1 (en) 1985-10-16
EP0011671A1 (en) 1980-06-11

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Legal Events

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RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties