Access control system reflects social problems. Access control is common in all parts of China. Residential areas, schools and even various government agencies have access control.

The wide implementation of access control system in China reflects a series of social problems and changes:

1.** Security needs and community management * *: First of all, the popularity of access control system reflects the society's emphasis on public safety and personal property protection. With the acceleration of urbanization and the enhancement of social mobility, the security risks of residential areas, schools and other places have also increased accordingly. As a technical means, access control aims to prevent irrelevant personnel from entering and leaving at will and reduce the occurrence of security incidents such as theft and harassment.

2.** Community isolation * *: However, excessive reliance on access control may also lead to the separation of the internal and external environment of the community, and even aggravate the sense of alienation in neighborhood relations. Strict access control system may bring inconvenience to foreign visitors, affect the establishment and development of interpersonal relationships, and may hinder rapid and effective rescue in an emergency.

3.** Conflict between management efficiency and contradiction * *: In actual operation, lax or strict implementation of the access control system may lead to contradictions. On the one hand, if the access control is ineffective and cannot effectively prevent illegal invasion, it will make residents question property management and community safety; On the other hand, if the management is too strict, for example, the owner forgets to bring an access card or is blocked from visiting relatives and friends, it is easy to cause friction between the owner and the property.

4.** Privacy and fairness * *: Access control systems are often accompanied by the use of monitoring facilities, which has aroused public concern about personal privacy. In addition, the high deposit and complicated procedures of access cards also reflect the fairness of resource allocation and service.

5.** Resource allocation and rights protection * *: In some old residential areas, the installation and maintenance costs of access control may be passed on to residents, and these costs and subsequent service quality become a part of the protection of residents' rights and interests, which also tests the level of property management and the effectiveness of government supervision.

To sum up, the changes brought by the access control system are diverse and complicated, which not only play a positive role in maintaining social order, but also expose areas that need to be continuously optimized and improved in social governance, citizens' rights and interests, and community cultural construction.