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:
Feb. 04, 2014
Filed:
Apr. 13, 2010
Tadayoshi Kohno, Seattle, WA (US);
Alexei Czeskis, Seattle, WA (US);
Karl Koscher, Seattle, WA (US);
Joshua R Smith, Seattle, WA (US);
Tadayoshi Kohno, Seattle, WA (US);
Alexei Czeskis, Seattle, WA (US);
Karl Koscher, Seattle, WA (US);
Joshua R Smith, Seattle, WA (US);
University of Washington through its Center for Commercialization, Seattle, WA (US);
Abstract
An approach for defending radio frequency identification (RFID) tags and other contactless cards against ghost-and-leech (a.k.a. proxying, relay, or man-in-the-middle) attacks incorporates gesture recognition techniques directly implemented with the RFID tags or contactless cards. These tags or cards will only engage in wireless communications when they internally detect 'secret handshakes.' A secret handshake recognition system is implemented on a passive WISP RFID tag having a built-in accelerometer. This approach is backward compatible with existing deployments of RFID tag and contactless card readers and is also designed to minimize the changes to the existing usage model of certain classes of RFID and contactless cards, such as access cards that are kept in a wallet or purse, by enabling execution of secret handshakes without removing the card. This novel approach can also improve the security and privacy properties in other uses of RFID tags, e.g., contactless payment cards.