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1. (WO2017157409) WIRELESS BODY WORN PERSONAL DEVICE WITH LOSS DETECTION FUNCTIONALITY

Pub. No.:    WO/2017/157409    International Application No.:    PCT/EP2016/055405
Publication Date: Fri Sep 22 01:59:59 CEST 2017 International Filing Date: Tue Mar 15 00:59:59 CET 2016
IPC: H04R 1/10
H04R 25/00
Applicants: SONOVA AG
Inventors: DICKMANN, Georg
LUCAS-HIRTZ, Daniel
Title: WIRELESS BODY WORN PERSONAL DEVICE WITH LOSS DETECTION FUNCTIONALITY
Abstract:
There is provided a personal device to be worn at the body of a user (15), comprising an interface (20) for wireless data exchange with an external device (11, 39, 50); at least one sensor (28, 42, 44, 46) for sensing a parameter indicative of the proximity of the personal device (10) to the user; a loss detection unit (40) for determining, by regularly analyzing signals received from the sensor, whether the personal device is presently worn by the user or not; a control unit (38) for controlling operation of the personal device in a regular mode as long as the loss detection unit determines that the personal device is worn by the user and in a loss mode as long as the loss detection unit determines that the personal device is no longer worn by the user, wherein the wireless interface is directed to transmit in the regular mode a non-traceable device address and to transmit in the loss mode a traceable public device address.