Caputchin
A CAPTCHA replaced by a quick game humans win and bots can't
Caputchin launched on June 9, 2026 with 2 votes.
What it does
Caputchin replaces the usual CAPTCHA puzzle with a short game a visitor plays for a few seconds. The games need fast reactions with no answer readable from the page, and every round is re-checked on the server, so they are easy for people but keep out bots and AI solvers. It works without collecting any IP, fingerprint, or tracking data about your visitors, and the widget and games that run on your site are open source for developers to read and restyle.
Caputchin replaces the surveillance circus with games. No cookies, no fingerprinting, no fire hydrants. Just a small challenge bots fail and humans enjoy.
Turn the web's most annoying moment into something actually fun. Pick from a growing arcade of quick games, play a few seconds, and you're in. Easy for humans, unwinnable for bots. OCR puzzles, image grids, invisible risk scores: frontier models clear them in milliseconds. Caputchin is the one challenge they still can't, and the one humans are glad to see. Layered gates and server-side anti-cheat shut the door on automation, while a fast, sensory game makes split-second reaction the bar. Three independent gates stack defense in depth. Solve one and the next still stands. No single model clears them all. Signed tickets, deterministic replay, and scoring that lives on our servers, never the…from caputchin.com
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Replace CAPTCHAs with WebAuthn passkeys for bot prevention2024 · github.com · ▲71I built Nocaptcha after getting frustrated with traditional CAPTCHAs both as a user and developer. WebAuthn passkeys offered a promising alternative that's both more secure and user-friendly. What makes Nocaptcha different: - Uses WebAuthn standard instead of puzzle-solving - No need for users to remember passwords or solve puzzles - Open source Current limitation: Working with W3C WebAuthn Community Group on true passkey disposal for this use case. Looking for feedback particularly on: 1. Integration experience 2. User experience compared to traditional CAPTCHAs
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