Log in with your mind
A cognitive biometric powered by reaction time, keystroke rhythm, and gaze patterns. An identity measured, not guessed.
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Interactive Demo
Experience cognitive authentication
Enter a username, run the cognitive calibration, and verify yourself in under two minutes. Works without a webcam — unlocks gaze tracking when you opt in.
Why GrayPass
Authentication that can't be stolen
Passwords get stolen, OTPs are intercepted, and biometrics leak. GrayPass fuses millisecond-resolution behavioural signals into a biometric you can rotate, revoke, and verify.
Cognitive-first security
GrayPass reads the pattern behind your reactions, cadence, and gaze — making shoulder surfing, credential stuffing, and replay attacks useless.
Privacy by design
Interactions become deterministic features, salted and encrypted. We never store raw biometrics. Opt-in data is double-encrypted for research only.
Drop-in SDK
Start building in one afternoon. Our API pipes the cognitive signal, returns adjudicated confidence, and integrates with any auth workflow.
Sub-second decisions
Multi-lane matching combines fast hashing with fuzzy timing and learned embeddings. Accept or deny in milliseconds, not seconds.
Cancelable templates
If credentials leak, rotate the seed. Feature vectors are projected through per-user randomness — database spills are useless.
Replay-hard challenges
Server-driven shuffled stimuli with jittered delays. Every challenge expires fast and must run in-order — no macros, no bots.
How It Works
Three lanes, one decision
Authentication is orchestrated in three tightly-coupled lanes. Each lane is observable, rate-limited, and explains why a session was accepted or denied.
Capture & calibrate
Stroop and typing challenges collect millisecond-level reaction timing, keystroke intervals, and optional gaze tracks. Integrity checks verify a human is present.
Engineer the signal
Reaction distributions, keystroke rhythms, and gaze variability are quantized into a stable 15-dimensional feature vector and produce a salted brainprint.
Decide with confidence
Multi-lane matching blends fast hashing with fuzzy timing and a learned embedding. You receive accept/deny plus calibrated confidence, ready for policy.
How to try the demo
The full experience takes under two minutes. Here's what to expect.
Enroll
Click 'Enroll' mode and type in a username. It can be anything — we'll remember you.
Camera Setup
Optionally activate your camera for gaze tracking. Track the red calibration dots with your eyes. No camera? That's fine too.
Stroop Test
You'll see colour words written in different colours. Click the bar matching the text colour, not the word itself.
Typing Test
Type 'graypass is my passport' at your own natural pace. We measure rhythm, not speed.
Login & Verify
Switch to 'Login' mode, enter your username, and redo the tests. If your behaviour matches — you're in.
Share your feedback
Tell us where the demo surprised you, what's missing, and how GrayPass could fit your stack.
Ready to build with cognitive auth?
Get started with our API in minutes. No hardware required — just a browser and your users' natural behaviour.