Log in with your mind.
A cognitive biometric powered by reaction, rhythm & gaze — not fingerprints. As we say; an identity measured, not guessed.
Try the GrayPass demo
Experience mental-auth in under two minutes. Enter a username, run the cognitive calibration, and hop back in to verify. Works without a webcam; unlocks gaze tracking when you opt in.
Demo Instructions
Follow these simple steps to experience the future of authentication
Enroll Mode
Click 'Enroll' mode and type in a username. It can be anything you like! We'll remember you. When you're ready, you can start.
Camera Setup
If you have a camera, activate it - it adds another layer to the authentication. If not, that's also fine! We can work without it too. After you activate it, you'll see some red dots on your screen. Track the dots with your eyes to help calibrate the camera! If you didn't activate it, just skip this step and follow through with the next steps.
Stroop Test
You're going to play a 'Stroop test'. You'll see text (colour names) written in different colours. Click the colour bar that matches the colour the word is written in. For example, if it says 'Red' in Yellow text, click Yellow.
Typing Test
Straight after the Stroop test, you'll be asked to type 'graypass is my passport'. It's a typing test at your OWN pace, so feel free to type however you like.
Login & Verify
You're done the test! Now, type in your username again, click 'Login' mode, and redo the test. If your behaviour matches your previous attempt, you're in! If not... well you can always try again! Have a go!
Ready to experience cognitive authentication?
Why GrayPass beats conventional Auth
Passwords get stolen, OTPs are intercepted, and biometrics leak. GrayPass fuses millisecond-resolution behavioural signals into a biometric you can rotate, revoke, and verify with mathematical certainty.
Cognitive-first security
GrayPass reads the pattern behind your reactions, cadence, and gaze — not just what you know or have. That makes shoulder surfing, credential stuffing, and replay attempts useless.
Privacy engineered in
Interactions are distilled into deterministic features, salted, and encrypted. We never store raw biometrics by default; opt-in data is double encrypted for research only.
Drop-in developer SDK
Start building in as little as one afternoon. Our API pipes the cognitive signal, returns adjudicated confidence, and integrates with any auth workflow you already run.
How the signal flows
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 timing and optional gaze tracks. Focus integrity checks make sure there is a human on the other side.
Engineer the signal
We quantize reaction distributions, keystroke rhythms, and gaze variability into a stable 15-D feature vector and produce a salted hash brainprint.
Decide with confidence
Multi-lane matching blends fast hashing with fuzzy timing and a learned embedding. You get an accept/deny plus calibrated confidence, ready for policy.
Give us your harshest feedback
Tell us where the demo surprised you, what is missing, and how GrayPass could fit into your stack.