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Device Fingerprinting
Tracking
Identifying your device using many small signals instead of a cookie.
Definition
Device fingerprinting is a way to recognize a device by combining signals like screen size, fonts, and settings.
In plain English
Identifying your device using many small signals instead of a cookie.
Why this matters
Why it matters: It can track you even if you block cookies, making opting out harder.
Example
Example: A website uses fingerprinting to recognize returning visitors without logins.