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Browser Fingerprinting

Tracking

Tracking Device/Browser Fingerprinting Device Fingerprint Privacy Budget

Technique creating an identifier from browser-exposed attributes and behaviors.

Definition

Browser fingerprinting derives an identifier using browser APIs and attributes (user agent, canvas/WebGL, fonts, locale, time zone, device capabilities). It can be deterministic or probabilistic.

In plain English Technique creating an identifier from browser-exposed attributes and behaviors.

Why this matters

Why it matters: It bypasses storage-based controls and increases cross-site tracking.

Example

Example: Anti-fingerprinting protections reduce API precision, randomize surfaces, and partition state by site.

Apps Using Browser Fingerprinting

Examples of apps that implement or relate to this privacy concept

Tor Browser logo

Tor Browser

Privacy Score: 95

Tor Browser offers a privacy-conscious alternative in the browser space, with a stronger focus on...

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Mullvad Browser logo

Mullvad Browser

Privacy Score: 93

Mullvad Browser offers a privacy-conscious alternative in the browser space, with a stronger focu...

View app details →