About FingerPrint Checker
FingerPrint Checker (fpchecker.com) is a device fingerprinting and anti-abuse service. It started as an in-house system that protected our own free trials and rewards from repeat claims, and is now available to other teams.
What we believe
- The decision belongs on the server. A client cannot be trusted to identify itself.
- Say what is caught, not how. Publishing the rules teaches attackers.
- Pay for what you use. Prepaid credits, no seats.
- State limits plainly, including ours.
What we do not have
We do not publish customer logos, user counts, device counts or accuracy figures, because we would rather show you the product on your own traffic. Start with free checks and measure it yourself.
Get in touch
Questions about fit, security or deletion go through the contact form. We read every message.
Try it on your own sign-up flow
Every new account gets 2,000 free checks. No card required.