Displaying a seeded, continuously updating identifier in a QR code
US10460221B1 · kind B1 · utility
3Cited by
1References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 7, 2018 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Sep 7, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2129
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for displaying a seeded, continuously updating identifier in a QR code and a QR code display and replay attack prevention device that displays a seeded, continuously updating identifier displayed in a QR code are disclosed. This method and QR code display and replay attack prevention device has a changing QR code, preventing replay attacks. The QR code display and replay attack prevention device has a small form factor, is low powered, is inexpensive, and requires no connectivity to the internet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.