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A comment on Show HN: Are you trackable? An irrevocable persistent browser cookie.

Re:Show HN: Are you trackable? An irrevocable persistent bro... by agrafix on Tuesday September 27, 2016 @06:25PM (#12593739)
I could beat it by using a different browser (e.g. chrome vs firefox) on my machine.
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Re:Show HN: Are you trackable? An irrevocable persistent bro... by Capira on Tuesday September 27, 2016 @06:43PM (#12593860)
Across browsers it works only if both browsers are based on the same engine.

- Group1: Chrome, Chromium, Opera, ...

- Group2: Firefox, Tor Browser, ...

- Group3: on iOS every browser is based on Safari

- ...

Though with a backend you could track users switching among Chrome and Firefox by misusing WebRTC to leak the private IP ( https://www.perfect-privacy.com/webrtc-leaktest/ ). If the switching between browsers happens in a short period of time, the public + private IP is a pretty solid guess. If you observe and store this connection once you can always track the user switching among the two browsers.

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