Content alteration for prevention of unauthorized scripts
US7624277B1 · kind B1 · utility
68Cited by
11References
50Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2003 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Jul 28, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2133
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods for preventing unauthorized scripting. The invention generates a human interactive proof to distinguish a human from a machine by generating a random set of characters and altering each of the characters individually to inhibit computerized character recognition. The invention also includes concatenating the altered characters into a character string to be rendered to a user as a test. The character string may be altered to further inhibit computerized character recognition. Other aspects of the invention are directed to computer-readable media for use with the methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.