Lottery ticket integrity number
US4725079A · kind A · utility
186Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1986 |
| Grant date | Feb 16, 1988 |
| Priority date | — |
| Expiry date | Jul 11, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S283/903
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A method for enhancing the security of instant lottery tickets. A book number indicating from which packet a particular lottery ticket originated is printed on the back of the ticket and an integrity number is printed on the front of the ticket. The integrity number is related to the book number by an algorithm known only to the ticket manufacturer and the lottery administration. To further enhance the security of the ticket, the book number and integrity number are simultaneously printed onto the ticket.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.