Online captcha test example free Tests. Our test CAPTCHA pages offer significant benefits by demonstrating how CAPTCHA works and presenting clear examples of script functionality. Welcome to the "CAPTCHA Simulator"! Description: The CAPTCHA Simulator is an interactive tool designed to replicate the experience of solving CAPTCHAs (Completely Automated Public Turing test to tell Computers and Humans Apart). Free online practice pages to help you improve your kph (keystrokes per hour) speed on alphanumeric data entry and 10-key test. Unlike other solutions, ALTCHA is free, open-source and self-hosted, does not use cookies nor fingerprinting , does not track users, and is fully compliant with GDPR . Feel free to experiment with various setting combinations. Captcha alternative ALTCHA uses a proof-of-work mechanism to protect your website, APIs, and online services from spam and unwanted content. CAPTCHAs were developed as a type of challenge-response test used in computing to distinguish between human users and automated bots. A CAPTCHA image shows a random string which the user has to type to submit a form. A “CAPTCHA” is a turing test to tell human and bots apart. eukfvtzbavzndavqwzaluanmipkvtgkiklozmjrmmbsgexvluiwtyqnkubaayleisxqeallcihvvvgt