6.This article presents a dynamic identity authentication system based on mobiletelephone token-ring,which generates synchronous authentication key independently in both mobiletelephone Token-ring and authentication server.
8.As recently as 1976, radio telephone providers in New York City could handle only 545 mobiletelephone customers at a time—an absurdly small number by current standards.
9.The working principle, systematic structure of wireless application protocol (WAP) and its application to wireless time service via mobiletelephone are introduced.