Currently the bank branches mostly use two door access keys, doorbell, credit card, etc., and generally between the counter and the business lobby there are set up two doors fitted with surveillance. When counter staff go into the operating basis, they need have doorbell, and people come from inside open the door. This mode of operation is prone to key forgotten, lost, records missing, and other issues, resulting in unclear responsibilities, risks, assumed office efficiency and staff mistakenly opened the door. So how to solve the traditional way where bring cumbersome and risks, it has become a priority of the current financial security field.