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I built an open-source alternative to Cloudflare Turnstile using Fitts's Law and Kinematics

This story is from 2026-09-01. It is preserved in the archive; the latest stories are on the live feed.

Hey everyone! 👋 I’ve always hated intrusive CAPTCHAs and expensive proprietary cloud WAFs. Even the "invisible" ones (like Cloudflare Turnstile or reCAPTCHA v3) are black boxes that collect massive amounts of user telemetry. So, I spent the last few months building Synapse Shield — a completely op…

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  1. 2026-09-01 12:23 · DEV Community — AI
    I built an open-source alternative to Cloudflare Turnstile using Fitts's Law and Kinematics

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