It provides a low-cost and easy-to-maintain one-card system for service-oriented architecture for users. After service customization and integration, it will meet the demands of identity authentication, consumption, access control, attendance, water control, electricity control, conference management and others, which cover every aspect of users’ life, study, work and management. Based on pure B/S architecture, it enables the users to deal with all kinds of businesses through webpage. It is characterized by one-click installation, unified configuration, high system integration level, unified authorization, convenient maintenance, etc.