this post was submitted on 17 Oct 2024
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As a developer, I can foresee websites using features other than
navigator.userAgent
to detect Chrome, because it's easy to change its value. For example: for now,navigator.getBattery
is available only in Chromium, and it doesn't need permissions to be checked for its existence throughtypeof navigator.getBattery === 'function'
(also, the function seems to be perfectly callable without user intervention, enabling additional means of fingerprinting). While it's easy to spoof userAgent, it's not as easy to "mock" unsupported APIs such asnavigator.getBattery
through Firefox.