[uievents] Mechanism to differentiate pointer input from multiple users/devices missing (#16)

Copied from W3C Bugzilla: https://www.w3.org/Bugs/Public/show_bug.cgi?id=22891

##### Sangwhan Moon 2013-08-06 14:32:03 UTC
The standard currently does not provide a reliable way to determine multiple users inputting with multiple devices, as all the pointers will be generated in one flat queue with no mechanism to differentiate the source.

As a directly affected use case, gaming consoles will not be able to make use of pointer events without proprietary hacks or extensions.

##### Comment 1 Arthur Barstow 2013-09-10 16:58:45 UTC
The Pointer Events WG discussed this bug on 10-Sep-2013 and the minutes from that discussion are <http://www.w3.org/2013/09/10-pointerevents-minutes.html#item05>.

##### Comment 2 Arthur Barstow 2013-09-11 11:08:25 UTC
Moving this to WebApps' UI Events spec per resolution of the Pointer Events WG (PEWG) on 10-Sep-2013 (URI below). 

SeeAlso: PEWG's UCs and requirements doc <http://www.w3.org/wiki/PointerEvents/UseCasesAndRequirements>


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