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Re: [sensors] Javascript 120Hz devicemotion events for high end inertial applications

From: Maryam Mehr via GitHub <sysbot+gh@w3.org>
Date: Tue, 21 Feb 2017 13:08:29 +0000
To: public-device-apis-log@w3.org
Message-ID: <issue_comment.created-281339687-1487682507-sysbot+gh@w3.org>
The very first comment of this thread says: "Browsers only sample 
sensor data at a varying 67Hz (drops down to 1Hz sometimes)".

Research-wise, sensors at any frequency (even 20 Hz) are able to 
reveal something about the user's activity (touch actions, PINs, etc.)
 or his surrounding environment.  We can't say 5 hz or 60 hz or 200 hz
 is safe or not. However, the higher frequency, the better attack 
results; the lower frequency, the more expensive machine learning 
techniques, the attackers will find their way through anyway.  That is
 why we advise to have design-level security models rather than 
implementation limitation solutions i.e. playing with the sampling 
rates. 

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Received on Tuesday, 21 February 2017 13:08:37 UTC

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