Contact-less tag with signature, and applications thereof

US8103872B2 · kind B2 · utility

Assignee

• BCE Inc. · CA

Inventors

• William G. O'Brien · Mississauga, CA
• Tet Hin Yeap · Ottawa, CA
• Sanro Zlobec · Notre-Dame-de-l'Île-Perrot, CA

Key dates

• Filing date: Dec 11, 2008
• Grant date: Jan 24, 2012
• Expiry date: Mar 18, 2030

Classification

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

Abstract

A method, comprising: receiving an encrypted signature from a tag associated with an item; determining a dynamic parameter; obtaining a key based at least in part on the dynamic parameter; decrypting the signature with the key to obtain an identifier; and performing an action related to identification of the item, based on the identifier. Also, a system, comprising: a tag reader configured to receive an encrypted signature from a tag associated with an item; and a processing entity configured to (i) determine a dynamic parameter; (ii) obtain a key based at least in part on the dynamic parameter; (iii) decrypt the signature with the key to obtain an identifier; and (iv) perform an action related to identification of the item, based on the identifier.