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:
Sep. 08, 2026
Filed:
Jun. 22, 2022
Orange, Issy-les-Moulineaux, FR;
David Excoffier, Chatillon Cedex, FR;
Dinh Thuy Phan Huy, Chatillon Cedex, FR;
ORANGE, Issy-les-Moulineaux, FR;
Abstract
A method for detecting presence of a person using a communicating device connected to a wireless communication network, within a determined environment in which a radio-frequency tag configured to backscatter ambient signals is located at a known geographical position. The method includes: transmitting over the wireless network, by the communicating device, an ambient signal within the environment; backscattering, by a the tag, the ambient signal to form a backscattered signal, the backscattered signal including identification data of the tag; receiving the backscattered signal by a network apparatus connected to the wireless network and obtaining, from the backscattered signal, the identification data of the tag and a network identifier of the communicating device; and recording, in a database, an item of presence information of the communicating device within the environment, which includes the identification data, the network identifier and a date of receipt of the backscattered signal.