Even if you clear your cookies and use a VPN, websites can still identify you. How? Through browser fingerprinting — a technique that collects dozens of tiny details about your browser and device to create a unique identifier.
What Makes Up a Fingerprint
Your browser reveals hundreds of pieces of information: screen resolution, installed fonts, operating system, timezone, language, browser version, installed plugins, GPU model, and much more. Combined, these often create a fingerprint that’s unique to your device.
How Unique Is Your Fingerprint?
Research by the Electronic Frontier Foundation found that most desktop browsers have a fingerprint that’s unique among millions of visitors. With JavaScript enabled, the number of identifying signals increases dramatically.
Why This Matters
Browser fingerprinting is used for tracking users who block cookies, for fraud detection (banks use it), and increasingly for advertising targeting. Unlike cookies, you can’t easily clear your fingerprint — it’s based on device characteristics that change slowly or not at all.
How to Reduce Fingerprinting
- Use Firefox: Firefox has built-in fingerprinting protection in its strict tracking protection mode
- Use the Tor Browser: It’s specifically designed to make all users look identical
- Disable JavaScript: Most fingerprinting relies on JavaScript, but this breaks many websites
- Use uBlock Origin: Blocks many fingerprinting scripts
- Brave Browser: Has fingerprint randomization built in
The Honest Truth
Complete protection against browser fingerprinting is very difficult unless you’re willing to use Tor Browser and accept its limitations. But reducing your fingerprint — making yourself less trackable — is achievable with the right browser settings and extensions.