I replaced CAPTCHA with passive biometrics after AI hit 91% bypass rate — 7 biological signals, no puzzles, free tier

CAPTCHA is broken AI now bypasses reCAPTCHA at 91%+ success rates. Every CAPTCHA you add costs you 17-29% conversion. It is a bad trade that gets worse every year. What I built ANIMA collects 7 passive biological signals during normal page interaction — no puzzle, no challenge, no user friction: Neuromotor tremor (8-12 Hz motor neuron oscillation) Inter-tap interval variance (stochastic neural timing) Associative response latency (cognitive processing time) Pointer dynamics (Fitts' Law biomechan