Captcha, short for Completely Automated Public Turing test to tell Computers and Humans Apart, has become an integral part of our online experience. By presenting challenges that only humans can solve, captchas assess the user’s authenticity, preventing automated bots from infiltrating websites and spamming users with malicious content. The most commonly encountered captcha forms ask us to recognize distorted text or images, select specific photos, or solve simple math problems. With the advancements in artificial intelligence, captchas have evolved to become more effective and user-friendly. From simple precautionary measures to sophisticated algorithms, captchas contribute significantly to safeguarding our digital lives and ensuring a secure online environment.#32#