Demo shows clearing browser data no longer stops fingerprinting
Developer Roy Fish published a demo page that assigns visitors a nickname based on their browser fingerprint and keeps it even after clearing cookies, opening incognito or switching IP via VPN. The post drew over 700 points on Hacker News. Google opened its ad products to device fingerprinting in January 2025, drawing sharp criticism from the UK's ICO.
- Demo keeps the nickname after clearing cookies, incognito and VPN IP changes
- Fingerprint combines user agent, screen resolution, fonts, time zone and GPU
- Google opened ad products to device fingerprinting in January 2025
- Only Brave, Tor Browser and Mullvad Browser defend at engine level
Read next
Software