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Re: [sensors] Possibility of cross-domain communication using frequency in periodic reporting mode

From: Rick Waldron via GitHub <sysbot+gh@w3.org>
Date: Thu, 23 Jun 2016 21:59:11 +0000
To: public-device-apis@w3.org
Message-ID: <issue_comment.created-228197734-1466719150-sysbot+gh@w3.org>
> . If there already exists an instance that is already polling at 
some frequency f, all new instances will be polling at the same 
frequency f

Can you explicitly cite where in the spec this behavior is defined. If
 a sensor has a max frequency of 100Hz, or 10ms per measurement, and 
two browsing contexts have created sensor instance objects that both 
request the max frequency, how should a spec define mitigation for 
something that is outside of the browser's control to begin with? Does
 `getUserMedia` have to deliver video frames at different frame rates 
if two contexts have requested the user's video camera?

> might receive a way of communicating across domains, by their 
hopping frequencies in a coordinated manner, and e.g. exchange 

Can you give a concrete example?

> . If this is so, it would in theory even be possible to exchange 
messages (e.g. identifiers) across two different browsers (e.g. 
Firefox and Chrome).

Again, a concrete example?

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Received on Thursday, 23 June 2016 21:59:14 UTC

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