An information processing system comprising a plurality of information processing devices (10A, 10B) having a wireless communication function, and a server, wherein one of the information processing devices includes first identification information obtaining means (31, S103) for obtaining, via wireless communication, first identification information possessed by an unspecified other one of the information processing devices located within a predetermined range from the one of the information processing devices, and client transmission means for transmitting transmission data stored or generated by the one of the information processing devices to the server on a network using the first identification information, the server includes accumulation means for accumulating the transmission data transmitted by the client transmission means, and server transmission means for transmitting the transmission data accumulated in the accumulation means to the unspecified other one of the information processing devices in response to access performed by the unspecified other one of the information processing devices, and the unspecified other one of the information processing devices includes transmission data obtaining means for accessing the server using the first identification information to obtain the transmission data accumulated in the server, wherein the server has information related to the unspecified other one of the information processing devices, where the information is published for at least the one of the information processing devices which has obtained the first identification information, and the unspecified other one of the information processing devices, and the one of the information processing devices which has obtained the first identification information is allowed to browse the information related to the unspecified other one of the information processing devices using the first identification information, wherein the server has an information publishing area corresponding to the unspecified other one of the information processing devices, the information publishing area corresponding to the unspecified other one of the information processing devices contains the information related to the unspecified other one of the information processing devices, and wherein the accumulation means accumulates the transmission data in the information publishing area corresponding to the unspecified other one of the information processing devices. first identification information obtaining means (31, S103) for obtaining, via wireless communication, first identification information possessed by an unspecified other one of the information processing devices located within a predetermined range from the one of the information processing devices, and client transmission means for transmitting transmission data stored or generated by the one of the information processing devices to the server on a network using the first identification information, accumulation means for accumulating the transmission data transmitted by the client transmission means, and server transmission means for transmitting the transmission data accumulated in the accumulation means to the unspecified other one of the information processing devices in response to access performed by the unspecified other one of the information processing devices, and