With the development of society, self-service terminals are more and more widely used. Self-service terminal equipment such as bank ATM machines, advertising machines, queuing machines, smart charging cabinets, etc. have been widely used, not only because of the self-service terminal equipment itself The convenient services it brings are also an indispensable product of social and economic development. Especially driven by the general trend of "Internet +", self-service terminals, as the release carrier and function expansion method of convenient service industry news, have been favored by operators. Service businesses are paying more and more attention. Today, self-service terminals in the financial industry, hospitals, finance, retail, etc. can be seen everywhere, bringing convenience to life and work.