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:
Sep. 08, 2026
Filed:
Jun. 07, 2024
Afero, Inc., Los Altos, CA (US);
Scott Bartlett, Oakland, CA (US);
Afero, Inc., Los Altos, CA (US);
Abstract
A system, method, and machine-readable medium are described for verifying a transaction related to a device with an on-device rewriteable memory. For example, one embodiment of a method comprises: during a purchase transaction to purchase a device at a point of sale (POS) system, reading a certificate stored on a rewriteable tag integral to the device; generating a signature over the certificate and, if the purchase transaction results in a successful purchase of the device, storing the signature in the rewriteable tag; during a post-purchase transaction, attempting to read the signature from the rewriteable tag and validate the signature; denying the post-purchase transaction if the signature cannot be read and/or is not validated; if the signature can be read and validated, then: permitting the post-process transaction; generating a new public/private key pair and corresponding new certificate; and storing the new certificate on the rewriteable tag.