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

From: Lukasz Olejnik via GitHub <sysbot+gh@w3.org>
Date: Mon, 11 Apr 2016 11:41:21 +0000
To: public-device-apis@w3.org
Message-ID: <issues.opened-147401608-1460374881-sysbot+gh@w3.org>
lknik has just created a new issue for https://github.com/w3c/sensors:

== Possibility of cross-domain communication using frequency in 
periodic reporting mode  ==
In the periodic reporting mode, the readout frequency of a sensor can 
be adjusted. 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. The details are at 
https://w3c.github.io/sensors/#observe-a-sensor

This means that two instances in different browsing contexts (even 
different tabs) might receive a way of communicating across domains, 
by their hopping frequencies in a coordinated manner, and e.g. 
exchange identifiers. However, as per discussion with Tobie Langel 
(thanks!), the frequency polling is actually attributed uniquely to a 
physical sensor. 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).



Please view or discuss this issue at 
https://github.com/w3c/sensors/issues/100 using your GitHub account
Received on Monday, 11 April 2016 11:41:29 UTC

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