Rupt assigns a stable device ID that follows the device — not the browser. Same person on Chrome and Safari, on first visit and incognito, after a cookie clear or browser update — same ID.
That stability is what makes account sharing, multi-accounting, and account takeover detection actually work.
Detect account sharing accuratelyA proprietary fingerprint built from Canvas, WebGL, audio, font, timing, and hardware signals — each contributing a stable hash that rarely changes between sessions.
Less than half a percent of drift over 30 days, even across major browser updates.
Browse the full intelligence responseEach device accumulates a history — sessions, accounts seen, concurrent activity, login patterns. The more Rupt sees a device, the higher its confidence.
Login from a brand-new device? Lower trust. Same device for 14 days across 3 browsers? Trusted.
Stop account takeoverBook a demo to see Rupt against your use case, or log in to your dashboard.