What I like best about Fingerprint is that it delivers on its core promise without the usual trade-offs. I ran a side-by-side test against our previous vendor and Fingerprint caught 23% more returning risky devices—it even distinguished between two identical iPhone models that our old solution couldn't tell apart, which was a game-changer for us. It also works reliably in incognito/private mode where cookie-based tools become blind spots; we caught a credential stuffing attack where a fraudster was cycling browsers and clearing cookies hourly, but the Visitor ID stayed consistent so we blocked 381 accounts from the same device family in under 3 hours. The Smart Signals like Suspect Score and browser tamper detection help my team triage faster without needing deep data science expertise. And honestly, the open-source heritage made me trust the platform from day one—I could inspect what they collect before signing anything, which is rare in this space. It's the one tool in our stack that doesn't create new problems while solving the ones we already had.

The most helpful thing about fingerprinting is that it lets us confidently identify the unique devices users are using. It also helps us spot higher-risk users who log in from multiple locations.

Its reliable and simple, we do not use all the features, mainly the unique visitor Id, which works well for us, especially for the mobile app users