A CAPTCHA based on 3D spatial recognition

Show HN: A CAPTCHA based on 3D spatial recognition

A CAPTCHA based on 3D spatial recognition is a business in show hn launch.

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I got tired of clicking traffic lights and fire hydrants, so I built a CAPTCHA that asks you to rotate a 3D object to match a target angle.Try it here: https://spatial-captcha-frontend.vercel.appThe idea is simple — humans are naturally good at understanding 3D space, but bots aren't. A bot would need to figure out the spatial orientation of a 3D model rendered in a WebGL viewport, which is a much harder problem than solving text or image classification CAPTCHAs.Under the hood it uses Three.js for rendering, quaternion comparison on the backend for angle matching (45° tolerance), and the whole thing drops into any site with two lines of HTML. Verification flow is the same as reCAPTCHA — pass

As a business in show hn launch, A CAPTCHA based on 3D spatial recognition is listed here with the public details available about it.

Its current recorded stage is Show HN launch.

Website: spatial-captcha-frontend.vercel.app