2. Pager, also known as queuing machine, is a high-tech product that comprehensively uses computer technology, network technology, multimedia technology and communication control technology. It can effectively replace customers' queuing and is suitable for various window service industries. It has been widely used in banks, hospitals and other industries. On the one hand, the use of pager system can eliminate the long-term "queuing" of customers, complain about "standing in the wrong line" and "jumping in line", and comprehensively improve the service quality and corporate image; On the other hand, we can adjust the business distribution, tap the potential, arrange the window service reasonably according to the statistical data, reduce the waiting time of the masses and improve the work efficiency.