- From: Martin Thomson <martin.thomson@gmail.com>
- Date: Fri, 26 Sep 2014 07:58:00 +0100
- To: Shijun Sun <shijuns@microsoft.com>
- Cc: "public-media-capture@w3.org" <public-media-capture@w3.org>
On 25 September 2014 17:21, Shijun Sun <shijuns@microsoft.com> wrote: > > The deviceId is currently defined as an identifier which must be *persistent* between application sessions. So a website can get the same deviceId's when a user visits the website using the same system, calling gUM() or not. Should we expect the deviceId's for any specific website be (largely) consistent across all systems? Otherwise, in the worst case when the Id is unique to each system, the website can potentially track the user. The requirement is that any deviceId information is cleared when cookies are cleared. Thus, it doesn't offer any better tracking capability than is already available.
Received on Friday, 26 September 2014 06:58:28 UTC