HTML5: Access Battery status through javascript
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HTML5: Access Battery status through javascript
1–10 of 13 posts
Re: HTML5: Access Battery status through javascript
#2It looks like the work that Mozilla are putting in to allow all the functionality needed for applications to be accessible through the browser is going well.
Worked perfectly on my laptop, in Firefox 13.
Re: HTML5: Access Battery status through javascript
#3Using Firefox 16.0a1 (2012-06-07) on OS X it's telling me my battery is at 100% and charging, while it's at 95% and not charging.
Re: HTML5: Access Battery status through javascript
#4Using Firefox 16.0a1 (2012-06-07) on OS X it's telling me my battery is at 100% and charging, while it's at 95% and not charging.
From the article "And it doesn't work yet on Mac (does work on iOS, Android and windows)."
Re: HTML5: Access Battery status through javascript
#5And at least one more bit for browser tracking...
Re: HTML5: Access Battery status through javascript
#6Now I finally know what the four icons in jQuery UI that shows battery levels can be used for. :-)
Re: HTML5: Access Battery status through javascript
#7I haven't tested it, but the post claims that this works on iOS, and I've never seen a preference option to disable this.
Someone clever could use this misfeature (what amounts to a data leak) to perform a sort of traffic analysis attack and infer data about your sleeping/working/browsing schedule, and then potentially interpolate travel patterns, business associations, and maybe even correlate to a precise (historical) physical location.
The security implications here are vast (and not immediately obvious), and there is a vanishingly small practical use case for this.
Why does this exist?
"can" != "should", for fuck's sake.
Re: HTML5: Access Battery status through javascript
#8Using Firefox 16.0a1 (2012-06-07) on OS X it's telling me my battery is at 100% and charging, while it's at 95% and not charging.
From the article "And it doesn't work yet on Mac (does work on iOS, Android and windows)."
Didn't work for me on Android 4.0.3 in either Chrome or the Android browser
Re: HTML5: Access Battery status through javascript
#9I haven't tested it, but the post claims that this works on iOS, and I've never seen a preference option to disable this. Someone clever could use this misfeature (what amounts to a data leak) to perform a sort of traffic analysis attack and infer data about your sleeping/working/browsing schedule, and then potentially interpolate travel patterns, business associations, and maybe even correlate to a precise (historic…
Why would a user leave the web page open through their sleeping working browsing schedule? Why would a dev use battery status to interpolate travel patterns instead of, say, the location API or your geo IP?
Given the other things available to a dev wanting to know about a user's behavior, battery status is a strange one to rant about.
> The security implications are vast.
No they're not. Battery status has been available to every app on your laptop for years without a problem. Web pages are ad hoc apps. If you're concerned, don't install the app, and use NoScript with a whitelist for browsing.
Re: HTML5: Access Battery status through javascript
#10I haven't tested it, but the post claims that this works on iOS, and I've never seen a preference option to disable this. Someone clever could use this misfeature (what amounts to a data leak) to perform a sort of traffic analysis attack and infer data about your sleeping/working/browsing schedule, and then potentially interpolate travel patterns, business associations, and maybe even correlate to a precise (historic…
Sometimes I charge my phone at night, sometimes I don't. Sometimes I charge it at work, sometimes I don't. You couldn't even infer my timezone from that data, let alone my location. And even if I did have a reliable schedule, so what? All you would conclude is that I am on GMT+1, and work 9 to 6. Shocker.