Captcha Articles

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7/16/2026 • EN

Argues AI isn't always the best tool; uses a captcha example to show simpler optical mouse techniques can break it.

Captcha image processing Motion Detection Optical Mouse Tesseract

11/11/2019 • EN

A tutorial on building a custom CAPTCHA generation API using Node.js and the Canvas API, covering random text generation and image manipulation.

Backend Canvas API Captcha image generation Node.js

1/4/2011 • EN

A critique of CAPTCHAs, arguing they are insecure, inaccessible, and shift the burden of spam prevention onto users instead of site owners.

accessibility Captcha Spam Prevention user experience web security

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