There is provided an information processing system including a service provider unit, a communication terminal and an information processing unit. The communication terminal includes a terminal first communication section, a terminal second communication section to communicate with the information processing unit through a first communication channel, a terminal third communication section to communicate with the information processing unit through a second communication channel, and a terminal communication control section. The information processing unit includes a unit first communication section to communicate with the communication terminal through the first communication channel, a unit second communication section to communicate with the communication terminal through the second communication channel, a unit communication control section to switch communication channels with the communication terminal from the first communication channel to the second communication channel, and a unit processing section to perform service processing with the service provider unit.