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Device Intelligence

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%.

99.5% accuracy

Pinpoint up to 99.5% of returning users, cookie-independent.

0.001% collision rate

Trustworthy fingerprints with industry-leading low collision.

Never blocked

Stealth mode defeats privacy plugins, ensuring 100% coverage.

Web and mobile

Seamless setup for browsers, iOS, and Android to track usage.

Optimization

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.

Up to 99.5% accuracy

Consistently identify returning users with industry-leading precision, even without cookies.

Ultra-low 0.001% collision rate

Minimize false positives to ensure legitimate users aren't mistakenly flagged or blocked.

Ad blockers won't obstruct any of our requests

Stealth fingerprinting technology bypasses privacy plugins and ad blockers for complete coverage.

Intelligence

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.

Returns device fingerprint, user agent, and more

Comprehensive device data including unique fingerprints and browser information via fast API.

Reveals IP geolocation, proxy, Tor, and datacenter status

Detect suspicious network usage including VPNs, proxies, and datacenter IPs for risk assessment.

Exposes carrier, uptime, incognito, adblocker, and more

Detailed device state information including network carrier, system uptime, and privacy settings.

Bot Detection

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.

Receive a bot score ranging from 0-100

Get a granular risk score to make informed decisions on blocking or challenging suspicious traffic.

Detect headless browser usage

Identify automated scripts running in headless browsers like Puppeteer, Playwright, or Selenium.

Analyze mouse and keyboard interactions

Examine behavioral patterns to distinguish genuine human activity from scripted bot actions.

Get started

Create your free account today

Starting at $0 for 1,000 requests per month, with transparent pricing that scales with your needs.