The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 2019
Filed:
Sep. 07, 2018
Applicant:
Ryan Crawford Tucker, Shoreline, WA (US);
Inventor:
Ryan Crawford Tucker, Shoreline, WA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 19/06 (2006.01); G06F 21/55 (2013.01); G06F 7/58 (2006.01);
U.S. Cl.
CPC ...
G06K 19/06037 (2013.01); G06F 7/582 (2013.01); G06F 21/552 (2013.01); G06F 2221/034 (2013.01);
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.