On 04/05/2017 07:34 PM, Tom Ritter wrote:
On Tue, Apr 4, 2017 at 10:29 PM, <stone123...@gmail.com> wrote:
Security & Privacy Concerns: none
It looks like this exposes pointerType, which reveals whether the user
is using a mouse, pen, or touch input.
Note, that is already available through old moz-prefixed API (which we very
much should remove)
http://searchfox.org/mozilla-central/rev/eace920a0372051a11d8d275bd9b8f14f3024ecd/dom/webidl/MouseEvent.webidl#84-92
It also exposes detailed information about the geometry of the input
(size of the thing pointing, pressure, tilt, twist.
All of these are more detailed information that websites currently
receiving, meaning that this can be used as a mechanism for
fingerprinting (and tracking) users.
-tom
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