Content 1. introduction 2. market status 3. WAP overview (Architecture & Wireless Application Environment) 4. WAE Service (WML and WMLScript) 4.1 WML and HTML 4.2 WMLScript and JavaScript/JScript 5. WAE User Agent (WML User Agent -- Browsers) 6. Security issue on WAP communication 6.1 Authentication 6.2 SSL-like security layer 7. connectivity with existing resource (gateway) 8. device specification 9. future study Introduction So far, PDA(Personal Digital Assistant) and WAP(Wireless Application Protocols)-able Mibile Phone is for the e-mail/web addicted persons. They provide email and web clippping fucntion, which enble people can access Internet while they are away from their desktop.