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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.:

US 11254288 B1

PDFFull Text
Date of Patent:
Feb. 22, 2022

Filed:

Oct. 29, 2020

Dynamic relay attack prevention using time of flight and rf fingerprinting

Applicant:

Ford Global Technologies, Llc, Dearborn, MI (US);

Inventors:

Vivekanandh Elangovan, Canton, MI (US);

Rita Barrios, Novi, MI (US);

Zachary Albright, West Bloomfield, MI (US);

John Robert Van Wiemeersch, Novi, MI (US);

Assignee:

Ford Global Technologies, LLC, Dearborn, MI (US);

Attorneys:

Frank L. Lollo

Brooks Kushman P.C.

Primary Examiner:

Edwin C Holloway, Iii

Int. Cl.
CPC ...
B60R 25/24 (2013.01); G01S 13/08 (2006.01); B60R 25/01 (2013.01); G07C 9/00 (2020.01);
U.S. Cl.
CPC ...
B60R 25/241 (2013.01); B60R 25/01 (2013.01); B60R 25/245 (2013.01); G01S 13/08 (2013.01); G07C 9/00309 (2013.01); B60R 2325/105 (2013.01); G07C 2009/00555 (2013.01); G07C 2209/63 (2013.01);
Abstract

Controlled access to a vehicle is provided. Whether time of flight (ToF) between an access device and a controller of the vehicle indicates a relay attack is identified. Whether a radio frequency (RF) fingerprint of the access device indicates a relay attack is identified. Responsive to the RF fingerprint but not the ToF indicating a relay attack, the ToF determination is retried. Passive access is allowed to the vehicle responsive to the retried ToF again indicating no relay attack.

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Elangovan, Vivekanandh. (2022). Dynamic relay attack prevention using time of flight and rf fingerprinting (U.S. Patent No. 11254288). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11254288

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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