Guides · 4 min read
How browser fingerprinting works: a developer's guide
Canvas, WebGL, fonts and the other browser traits behind a fingerprint: what each one measures, why it differs between devices, and how TraceTail turns them into a visitor ID.
TraceTail blog
Guides and analysis on browser fingerprinting, bot detection, privacy law and fraud prevention.
Featured
Guides · 3 min read
Inside a TraceTail fingerprint: every signal explained
The 45 measurements TraceTail's browser SDK takes, grouped into five families: what each one contributes, how they become a visitor ID, and what TraceTail deliberately leaves out.
Latest
Industry · 2 min read
TraceTail vs FingerprintJS: pricing, limits and features compared
How TraceTail compares with Fingerprint, the company behind FingerprintJS, on price, free allowance, rate limits, platforms and data retention, using Fingerprint's published pricing.
Guides · 3 min read
Detecting bots without cookies
How headless browsers and automation frameworks give themselves away, which checks are worth running, and how to combine them with a visitor ID.
Industry · 3 min read
What happens when cookies die? Fingerprinting in a privacy-first web
Safari, Firefox and Chrome have each limited cookies in their own way. Where that leaves visitor identification, and where fingerprinting fits.
Privacy · 4 min read
Browser fingerprinting and the GDPR: what the law requires
ePrivacy consent, GDPR legal bases, data minimization, retention and erasure: a practical guide for teams adding fingerprinting in the EU. Not legal advice.
Industry · 3 min read
Browser fingerprinting research: what recent papers found
What three studies (FP-Inspector, FPTrace and a 2024 review of fingerprinting and privacy) found, and what they mean for teams that rely on fingerprinting.
Use cases · 3 min read
Fraud prevention in financial services with browser fingerprinting
Spot account takeover and credential stuffing by checking which device is signing in, with code for the login flow and a clear look at the limits.
Industry · 2 min read
The future of browser fingerprinting
Browser defenses, privacy law and automation are reshaping device identification. What's changing, and what it means for teams that rely on it.
Use cases · 2 min read
E-commerce fraud detection with device fingerprinting
Use a visitor ID to catch promo abuse, card testing, multi-accounting and account takeover in an online store: patterns, thresholds and code.
Use cases · 3 min read
Defeating sophisticated fraud: layering device, behavior and network signals
Why no single signal stops determined fraudsters, and how to layer a device ID, behavioral checks and network context into graduated responses.
Use cases · 2 min read
Multi-accounting and ban evasion on gaming platforms
How browser-based games can use a visitor ID to link alt accounts and catch ban evaders, and where fingerprinting stops helping.
Privacy · 3 min read
Privacy-first fingerprinting: balancing security and user rights
Collect less, say what you do, keep data for a limited time and honor deletion requests: practical habits for using fingerprinting responsibly.
Use cases · 2 min read
Protecting travel bookings with device recognition
Loyalty-point farming, booking fraud with stolen cards and price-scraping bots: how travel sites can use a visitor ID against each.
Use cases · 3 min read
Building resilient authentication: device recognition beyond passwords
Use a visitor ID to tell known devices from new ones at sign-in, add friction only when the risk is real, and know where the signal stops.
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