Resilient device fingerprinting
Castle's device fingerprinting is engineered to circumvent ad blockers and privacy plugins. Up to 99.5% accuracy while maintaining a collision rate as low as 0.001%.Start for free
Pinpoint up to 99.5% of returning users, cookie-independent.
0.001% collision rate
Trustworthy fingerprints with industry-leading low collision.
Stealth mode defeats privacy plugins, ensuring 100% coverage.
Web and mobile
Seamless setup for browsers, iOS, and Android to track usage.
Fingerprinting optimized for account scenarios
Our fingerprinting technique is specifically fine-tuned for account abuse scenarios. While accuracy is vital for anonymous traffic assessment, reducing collisions is of utmost importance for account security. This guarantees that genuine users aren't mistakenly locked out and that alerts for any security breaches are sent to the rightful user.
Real-time device intelligence via API
All the device data points collected can be used by the rules engine and the analytics suite. The response is returned from the backend SDK in 150 milliseconds, regardless of scale.
Detect bots and headless browsers
We perform a deep analysis of user interactions, like mouse movements, to differentiate between human and robot behaviors. Furthermore, browsers are scanned for signs of headless signatures or privacy plugins.