Blog / Device fingerprinting
What a good new vs returning visitor ratio is, why the cookie-based count in analytics is wrong, and how returning visitors are recognized without cookies.
The best device fingerprinting solutions in 2026, split into open-source libraries you self-host and commercial solutions that maintain the identifier and add fraud signals.
Google retired the Privacy Sandbox in October 2025 and third-party cookies are staying in Chrome. What it was, why it ended, and what it means for fraud.
What passwordless authentication is, how it works, the main methods from passkeys to magic links, its benefits and limits, and where device signals fit.
What device-based authentication is, how recognizing a trusted device makes login transparent, how it differs from passkeys and cookies, and where it fits.
How adaptive (risk-based) authentication works, the signals it weighs, and how recognizing the trusted device decides when to step up and when to let a user through.
A practical guide to the best device intelligence platforms in 2026, how to evaluate them, and which fit self-serve teams versus enterprise fraud stacks.
What cookieless device identification is, how it recognizes a returning device without a stored cookie, and why it is not the same as cookieless analytics.
What is device fingerprinting: the signals that make up a device fingerprint, how the recognition works across browsers, web vs mobile, and what teams use it for.
