Abstract
In order to solve the problems of inconvenient carrying and management of the access card used in the existing market access control system, a set of intelligent access control system based on DES encrypted two-dimensional code is designed. The system consists of Android smart phone, embedded access controller and server. By sending and receiving QR code via smart phone, access to the door is obtained, which realizes centralized management of office buildings, companies, senior office buildings, luxury residences and other middle and high-rise places, effectively preventing unauthorized people from entering the high security area. In order to ensure information security, the two-dimensional code is encrypted by DES algorithm. This system has the characteristics of low cost, high security and flexible operation. It is still blank in the application field and has certain promotion value.
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