An information processing system for management of various pieces of information, the information processing system includes: a plurality of display record media, each having a unique identifier; an information selection section that selects information to be displayed; an information rewrite section that rewritably writes the information; a manipulation detection section that detects a selective manipulation of a user on the display record medium; a history storage section that records a history of the information and a history of the manipulations in association with a unique identifier of the display record medium, respectively; a manipulation history determination section for a user to determine any manipulation history out of a list of the histories of the manipulations; and an information search section that searches for at least one of a history of the information, a history of other manipulations and a unique identifier of the display record medium.