residence usually refers to room dedicated to living, including , , staff family dormitory and , staff single dormitory and student dormitory, etc. But from the point of view of access control classification can be directly divided into public residential and private villas.

public residential, such as various types of residential, apartment, etc. Residents usually have all walks of life in society, with complex and large mobility. Management is not easy, not only to meet the community security management, but also to meet the convenience of residents.

Private villa, with small personnel flow and high security level, access management is mainly reflected in the convenience of service owners.