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:
Jul. 29, 2025
Filed:
Feb. 02, 2023
Google Llc, Mountain View, CA (US);
Justin Lee Brickell, San Francisco, CA (US);
Max Christoff, Berkeley, CA (US);
GOOGLE LLC, Mountain View, CA (US);
Abstract
In an example embodiment, an issuer system receives payment card information from a payment processing system, wherein the payment card information is received from a payment card via a user computing device using near field communication. The issuer system generates an unpredictable number for the payment card and communicates the unpredictable number to the payment card via the payment processing system and the user computing device. The payment card calculates a cryptographic checksum based on the unpredictable number and a shared secret and communicates the checksum to the issuer system via the user computing device and payment processing system. The issuer system verifies the checksum using the shared secret and the unpredictable number. The issuer system generates a token associated with the payment card and transmits the token to the user computing device via the payment processing system for use in an online transaction.