Contact-less tag with signature, and applications thereof

US7806325B2 · kind B2 · utility

Assignee

• BCE Inc. · CA

Inventors

• William G. O'Brien · Mississauga, CA
• Tet Hin Yeap · Ottawa, CA

Key dates

• Filing date: Dec 11, 2008
• Grant date: Oct 5, 2010
• Expiry date: Dec 11, 2028

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W12/47
• WIPO field: IT methods for management
• WIPO sector: Electrical engineering

Abstract

A method, comprising: obtaining a signature from a contactlessly readable tag; decrypting the signature with a key to obtain (i) a candidate identifier and (ii) a scrambling code associated with the signature; and validating the candidate identifier based on at least one of the scrambling code and the signature. Also, a system, comprising: at least one tag reader configured to receive a plurality of signatures released by a respective plurality of tags, including a particular signature released by a particular one of the tags, and to cause decryption of the particular signature with a key to obtain (i) a candidate identifier, and (ii) a scrambling code associated with the signature; and a processing entity configured to effect validation of the candidate identifier based on at least one of the scrambling code and the signature.