The present technology relates to an information processing device, an information processing method, a program, and an information processing system realizing smooth entrance with an electronic ticket. ID information used for determining admittance or non-admittance of entrance with an electronic ticket is extracted from a captured image of a superimposition image which contains a predetermined image and the ID information superimposed on the predetermined image to determine admittance or non-admittance of entrance with the electronic ticket on the basis of the electronic ticket and the ID information. For example, the present technology is applicable to an entrance gate system or others provided to check entrance into an event site or the like.