human machine verification (hmv), commonly known as captcha (completely automated public turing test to tell computers and humans apart), is an essential security feature used in web applications...
人机验证(captcha)是网页应用的重要安全功能,用于区分人类用户与自动化机器人,防止垃圾邮件和虚假注册。常见类型包括文本、图像、音频和隐形captcha。实施时需考虑用户体验、可访问性和安全性,以有效区分人机并提升用户体验。