Abstract: A portable information processing apparatus includes a display, stereo loudspeakers, a pair of vibrators, and one or more processors. The pair of vibrators is provided on a left side and a right side of a main body of the information processing apparatus with respect to a center of the display. The one or more processors are configured to: generate sound signals to be output to the stereo loudspeakers, and output the sound signals; generate vibration signals for vibrating the pair of vibrators by vibrations, each having a plurality of frequency components, and output the vibration signals; and control an image to be displayed on the display.

Abstract: A communication system which includes a plurality of communication terminals, each communication terminal includes: a memory that stores a group attribute representative of an attribute of a group, the group attribute assigned to a communication terminal or a user of the communication terminal; a communication unit that transmits the group attribute stored in a memory of a correspondent terminal located within a predetermined range from the communication terminal, and receives a group attribute stored in a memory of the correspondent terminal; and a controller that compares the group attribute received by the communication unit with the group attribute stored in the memory of the communication terminal and initiates selectively one of a first information processing and a second information processing based on a result of the comparison.