Device intelligence, explained plainly.
Guides on how device fingerprinting works, what it can and cannot tell you, and how to turn it into fair decisions against bots, multi-accounting and fraud.
- FundamentalsWhat fingerprinting is and is not.
- Fraud preventionPlaybooks that stay fair.
- Network signalsVPN, proxy and Tor in context.
- IntegrationWeb, iOS and Android.
All guides
What is device fingerprinting?
Read the explainerBrowser fingerprinting vs cookies.
Compare the twoMobile device fingerprinting on iOS and Android.
Read the mobile guideIs device fingerprinting legal? Privacy, consent and GDPR.
Read the privacy explainerHow accurate is device fingerprinting?
Read the field guideWhat is Fingerly?
Meet FingerlyBot detection for signups and logins, without a wall of captchas.
Read the how-toPrevent multiple accounts and promo abuse, one device at a time.
Read the playbookStop account takeover with device signals, not more passwords.
Read the playbookHow to detect VPN, proxy and Tor traffic, and what to do about it.
Read the how-toMobile app fraud: emulators, clones and tampering, and what you can detect.
Read the playbookBuild or buy device identification? An honest guide for engineering teams.
Read the guideHow much does device fingerprinting cost?
Read the buyer’s guideDevice fingerprinting vs CAPTCHA: which one stops bots?
Read the comparisonDevice fingerprinting vs IP address blocking.
Read the comparisonHow to detect multiple accounts from one person.
Read the how-toHow to stop free trial abuse without hurting conversions.
Read the how-toReferral fraud and reward abuse prevention.
Read the how-toHow to stop fake signups and spam accounts without punishing real users.
Read the how-toCredential stuffing and login protection: stop the bots, keep the customers.
Read the how-toHeadless browsers and automation detection: telling a script from a person.
Read the explainerRooted and jailbroken devices: what they mean for fraud, and what to do about them.
Read the explainerAnti-detect browsers and fingerprint spoofing: what can and cannot be caught.
Read the explainerDevice farms and click farms, explained: how abuse scales and what you can detect.
Read the explainerWhat a device can tell you about a session.
Read the field guideVPN, proxy, or Tor? Know the difference.
Explore the signal notesBuild a risk policy. Not a wall.
Read the playbookMake the next connection a trusted one.
Start with the signals, keep your own decisions, and pay as you go, only for what you identify. No credit card needed.
