As the name suggests is that the import and export access control system for the import and export channel for control of the system, which is based on the traditional door lock developed from. The traditional mechanical lock is only a simple mechanical device, no matter how reasonable structural design, materials matter how strong, it can be the total through various means of breaking it open. In a lot of people out of the channel (such as offices, hotel rooms) is the key to the management of trouble, or loss of key personnel to have to replace the lock and key along with the replacement. In order to solve these problems, there have been electronic magnetic card lock, electronic locks, both of which emerged from the lock to a certain extent, to improve people's access channel management, channel management so that entered the electronic age, but with these two Electronic locks the continuous Crm application of their own shortcomings on the gradual exposure, magnetic card lock is easy to copy the information, card readers and equipment between the wear and tear, the high failure rate, low safety factor. Locks of the problem is easy to divulge passwords, and no way to check, the safety factor is very low. At the same time period, the products are mostly due to the use of part of the reader (enter password) and control installation together some of the outside, it is easy to be outdoors to open lock. During this period, the access control system remains immature in the early stages, so at the time of the access study in china control system is often referred to as electronic locks, is not widely applied.
In recent years along with proximity card technology, biometric technology, access control systems have been leap-style development has entered a mature stage, there have been sensor card access control system, fingerprint access control systems, access control system, iris and facial recognition access control systems, Out-of-order keyboard access control systems and other technology systems, their safety, convenience, manageability, and so on all have their strong points, access control system in the field more sem and more widely.