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:
Aug. 12, 2025
Filed:
Sep. 23, 2022
Apple Inc., Cupertino, CA (US);
Matthias Lerch, San Francisco, CA (US);
Florian Galdo, Emerald Hills, CA (US);
Gordon Y. Scott, Cupertino, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Systems and methods for detecting and preventing a relay attack in a channel on which a near field communication (NFC) action between a key holder device and a reader is attempted are disclosed. A time limit is established for polling communications between the key holder device and the reader. Each of the reader and the key holder device generates a reader random value and a device random value respectively. The reader sends to the key holder device the reader random value, which includes the time limit for a response from the key holder device, the response including the device random value and the reader random value. The reader receives the response from the key holder device and can then determine whether the response from the key holder device is received within the time limit, to detect whether a relay attack can be made on the channel for the NFC action.