Friday, April 07, 2023

Web Fingerprinting Is Worse Than I Thought


My visitor ID was stable in Safari after visiting fingerprint.com only in private windows across two separate sessions. This, despite using Safari's anti-tracking features, having iCloud Private Relay switched on, and using browser extensions which limit what kinds of scripts are able to run in my browser — and, again, accessing it only in private windows. On its homepage, FingerprintJS says the "VisitorID will remain the same for years, even as browsers are upgraded". It can be, near as makes no difference, a permanent personal identifier.

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