What is browser fingerprinting?
Fingerprinting reads the properties a browser exposes — its declared language and timezone, its rendering behaviour, its timing characteristics, the shape of its network handshake — and treats the combination as an identity. Detection rarely depends on one damning signal; it depends on a set that is internally inconsistent.
Why it matters
This is why consistency beats concealment. A run whose exit country, locale, timezone and timing all agree is unremarkable; a run whose signals contradict each other is conspicuous no matter how good any single one of them is.