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1. (WO2014202951) TRUSTED DEVICE

Pub. No.:    WO/2014/202951    International Application No.:    PCT/GB2014/051764
Publication Date: Thu Dec 25 00:59:59 CET 2014 International Filing Date: Tue Jun 10 01:59:59 CEST 2014
IPC: G06F 21/32
G06F 21/34
Applicants: ARM IP LIMITED
Inventors: FLAUTNER, Krisztian
VINCENT, Hugo John Martin
PHILLIPS, Amyas Edward Wykes
TAYLOR, Robert George
A trusted device, such as a wristwatch (2), is provided with authentication circuitry (26), used to perform an authentication operation to switch the trusted device into an authenticated state. Retention monitoring circuitry (32) monitors the physical possession of the trusted device by the user following the authentication operation and switches the trusted device out of an authenticated state if the trusted device does not remain in the physical possession of the user. While the trusted device remains in the physical possession of the user, communication triggering circuitry (38) is used to detect a request to establish communication with a target device that is one of a plurality of different target devices and communication circuitry (40) is used to communicate with that target device using an authenticated identity of the user.