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I didn't like that it was able to obtain my battery information. I discovered that this can be prevented in Firefox by setting dom.battery.enabled to "false" under about:config.

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I didn't even realize the website was trying to obtain information because I don't use JS. It's ridiculous how much of a liability it is.

Is that on a mobile or desktop browser? It didn't have any info about my battery (iPhone 6)

Desktop Firefox. Not all browsers expose battery information[1]. Of course Firefox for iOS isn't really Firefox.

[1] https://developer.mozilla.org/en-US/docs/Web/API/Navigator/b...

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