DE2967530D1 - Signature verification system and method of manufacturing a document for an authorized user - Google Patents
Signature verification system and method of manufacturing a document for an authorized userInfo
- Publication number
- DE2967530D1 DE2967530D1 DE7979101506T DE2967530T DE2967530D1 DE 2967530 D1 DE2967530 D1 DE 2967530D1 DE 7979101506 T DE7979101506 T DE 7979101506T DE 2967530 T DE2967530 T DE 2967530T DE 2967530 D1 DE2967530 D1 DE 2967530D1
- Authority
- DE
- Germany
- Prior art keywords
- documents
- disclosed
- signature verification
- cryptographic
- document
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
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.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US90783678A | 1978-05-19 | 1978-05-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2967530D1 true DE2967530D1 (en) | 1985-11-21 |
Family
ID=25424722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE7979101506T Expired DE2967530D1 (en) | 1978-05-19 | 1979-05-17 | Signature verification system and method of manufacturing 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)
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)
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 |
-
1979
- 1979-05-17 EP EP79101506A patent/EP0011671B1/en not_active Expired
- 1979-05-17 DE DE7979101506T patent/DE2967530D1/en not_active Expired
- 1979-05-17 AT AT79101506T patent/ATE16136T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0011671B1 (en) | 1985-10-16 |
ATE16136T1 (en) | 1985-11-15 |
EP0011671A1 (en) | 1980-06-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8328 | Change in the person/name/address of the agent |
Free format text: LEDERER, F., DIPL.-CHEM. DR., PAT.-ANW., 8000 MUENCHEN |
|
8339 | Ceased/non-payment of the annual fee |