Why I stopped using CAPTCHAs and built a behavioral API instead

The breaking point A form we ran had a CAPTCHA. Completion rate: 58%. After removing it: 81%. Bots barely slowed down. Real users just left. That's when I realized: CAPTCHAs aren't really protecting you. They're taxing your real users to slow down bots by seconds. The insight behind HUMA Humans and bots behave fundamentally differently. When a human fills out a form, they: Move the mouse in curved, organic paths Type with natural rhythm — faster on familiar words, pauses before corrections Scroll unevenly, sometimes going back up to re-read Take time to think before clicking Bots execute scripts: Linear mouse paths or no mouse movement at all Perfectly timed keystrokes Instant form completions Zero hesitation These behavioral signals are a much richer signal than "can you read this blurry text." How HUMA works <!-- 1. Drop this on your frontend --> <script src="https://humaverify.com/huma.js"></script> # 2. Call this from your backend curl -X POST https://humaverify.c