What is Browser Fingerprinting?
A tracking technique that collects information about your browser, device, and settings to create a unique identifier. Unlike cookies, fingerprints are nearly impossible to delete and can track you across websites without your knowledge or consent.
Also known as: Device Fingerprinting, Canvas Fingerprinting
Browser fingerprinting identifies you based on your device's unique characteristics—no cookies required. Even in "private" browsing mode, your fingerprint can follow you across the web.
What Gets Fingerprinted
- Browser type and version
- Operating system
- Installed fonts
- Screen resolution and color depth
- Timezone and language settings
- Installed plugins and extensions
- Canvas rendering (how your GPU draws graphics)
- WebGL capabilities
- Audio context fingerprint
- Hardware specifications
Why It's Dangerous
- Persistent: Can't be cleared like cookies
- Invisible: Happens silently in the background
- Cross-site: Works across different websites
- Resilient: Survives browser resets and VPN changes
How Unique Is Your Fingerprint?
Studies show that 99%+ of browsers have unique fingerprints. Even small changes in your setup create a distinct signature.
Protection Strategies
- Tor Browser: Designed to make all users look identical
- Firefox with resistFingerprinting:
privacy.resistFingerprinting = true - Brave Browser: Built-in fingerprinting protection
- Browser extensions: Canvas Blocker, uBlock Origin
The Irony of Protection
Adding anti-fingerprinting extensions can make you more unique. The best approach is using a browser designed from the ground up for fingerprint resistance.
Related Terms
Cookies
Small text files that websites store on your device. Cookies can remember login state, preferences, or shopping carts (first-party) — or track you across sites for advertising (third-party). They're one of the primary ways you're followed online.
Privacy by Design
An approach to systems engineering that takes privacy into account throughout the entire engineering process. Rather than bolting privacy protections onto existing systems, Privacy by Design builds privacy into the architecture from the ground up.
Tracking
The collection and correlation of data about your behavior across devices, sites, and time. Tracking enables targeted advertising, analytics, and surveillance. It's how companies and data brokers build detailed profiles of who you are and what you do.
Related Tools
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