Verification code generation to improve recognition accuracy by a person and recognition difficulty by a computer program
US10719599B2 · kind B2 · utility
0Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2019 |
| Grant date | Jul 21, 2020 |
| Priority date | — |
| Expiry date | Apr 24, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A verification request is received. In response to receiving the verification request, a first character string is obtained. The first character string comprises one or more variable characters. At least one of the one or more variable characters in the first character string is replaced with at least one backup character to generate a second character string based on multiple pre-established corresponding relationships. A verification code is generated based on the second character string. A user corresponding to the verification request is verified based on a user input corresponding to the verification code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.