On 11/29/2011 12:52 PM, Anne van Kesteren wrote: > Should there be some kind of privacy section? I guess you cannot tell > much from someone charging his phone, but maybe in conjunction with > other data you can find patterns of some kind. Fingerprinting is > probably also somewhat aided by this functionality. With the current state of the spec, the only privacy issue is quite minor: a website can know if you are currently running in battery mode which means not plugged. The only usage I can imagine of that information is a website trying to suck your power out. Even, such website can exist today and the only new information given is whether it is worth trying or not. About fingerprinting, there is currently no way to fingerprint a user with this feature because having no battery is going to be perceived as being plugged. Being on AC or on battery doesn't seem a sensitive information regarding fingerprinting given that being on battery is by definition a temporary state. However, coupling with a tracking system, it might help knowing if a user "might" have a battery. I don't know if that is very useful though. -- MounirReceived on Tuesday, 29 November 2011 14:45:56 UTC
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