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Re: In defence of a motion sensor spec

From: Tobie Langel <tobie@sensors.codespeaks.com>
Date: Tue, 07 Mar 2017 12:20:26 +0100
Message-Id: <1488885626.1254061.903085112.058EB241@webmail.messagingengine.com>
To: "Maryam Mehrnezhad (PGR)" <m.mehrnezhad@newcastle.ac.uk>
Cc: public-device-apis@w3.org
On Tue, Mar 7, 2017, at 11:18, Maryam Mehrnezhad (PGR) wrote:

> Thanks for your complete email. I have one question. I didn't get it
> from the email what would be the suggested frequency in the spec?
> 



You mean a default frequency? I don't really have an opinion so far. If
we did recommend default frequencies, this would probably be sensor-
type specific.


>
> You mentioned that you imagine the settable frequency would be
> hardware or platform bound, and that this might have fingerprinting
> issues which should be documented.
> 

> However, hardware and platform are very much different (e.g. 1600Hz vs
> 200 Hz in some Android devices). The W3C spec should decide whether it
> wants to go beyond platform bound or not.


This is probably better left implementation specific. Depending on
the platform, direct access to the HW or the HAL might or might not
be possible.


--tobie
Received on Tuesday, 7 March 2017 11:20:53 UTC

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