Fingerprint Lie Detector Prank

⚠️ THIS IS A PRANK APP. It is a simulator for entertainment only. It does NOT read your fingerprint, it does NOT measure anything about your body, and it CANNOT detect lies. Every result is fake.

Fingerprint Lie Detector Prank turns your phone into a fake polygraph. Hand it to a friend, ask them a question, and have them hold their thumb on the scanner pad.
A dramatic scan animation plays, fake "analysis" runs, and a big TRUE or LIE
verdict appears with sound and flair.

HOW IT WORKS
• Your friend places a thumb on the on-screen fingerprint pad
• A realistic-looking scan animation runs for a few seconds
• Fake telemetry text keeps the tension going
• TRUE (green, calm chime) or LIE (red, alarm) is revealed

THE SECRET
There is a hidden control that lets you decide the outcome before the scan even starts. Learn it once and you can guarantee a LIE verdict on demand your friend will never see it happen. Without it, results are a fair 50/50 coin flip.

FEATURES
• Realistic scanner animation and sound design
• Hidden arming gesture for a forced verdict
• Sound on/off toggle
• Watch a short video to remove ads for 30 minutes
• Works offline, no account, no sign-up

IMPORTANT PLEASE READ
This app is a novelty and party game. It does not use your device's fingerprint sensor or any biometric API. It does not collect biometric data. It does not perform lie detection, polygraph analysis, or any medical or physiological measurement of any kind. Results are randomly generated or chosen by the person running the prank. Do not use it to make real decisions about anyone.

Have fun, and prank responsibly.