Browser Fingerprinting: The Tracking Method That Ignores Your Cookie Settings

You cleared your cookies. You're using incognito mode. You installed a privacy extension. You enabled "Do Not Track." You're still being tracked. Browser fingerprinting identifies you based on unique characteristics of your browser and device — no cookies required. It works silently, invisibly, and is largely immune to the privacy controls most people rely on. What Is a Browser Fingerprint? Every time you load a webpage, your browser transmits hundreds of data points: User agent string (browser name, version, OS) Screen resolution and color depth Installed fonts (enumerated via JavaScript) Canvas rendering fingerprint (how your GPU renders graphics) WebGL fingerprint (3D graphics rendering signature) Audio context fingerprint CPU architecture and core count Network information Combined, these form a fingerprint that uniquely identifies approximately 1 in 286,777 browsers — with no persistent storage required. A 2010 EFF study found 84% of browsers were uniquely identifiable. By 2014: 9