"Just tried a free online 'lie detector' that asks for your fingerprint — spooky and unreliable. These tools aren't scientifically validated: fingerprints can’t reveal truthfulness, and sites may collect biometric or personal data. Don’t upload real fingerprints or sensitive info. If you want to test honesty, stick to proven methods: professional polygraphs (limited reliability), careful questioning, and behavioral context."

If you see an ad or website claiming this technology exists, it’s a red flag. Real lie detection is complex, requires physical sensors, and cannot be done remotely via fingerprint alone.