1. An information processing device comprising: a global map acquiring unit that acquires at least a part of a global map representing positions of one or more feature points on objects in a real space where a plurality of users are in activity, wherein the global map is generated based on data from devices of the plurality of users; a local map generating unit that generates a local map representing positions of the one or more feature points on objects detectable by a device of one user among the plurality of users; an updating unit that updates the global map based on position data of the one or more feature points included in the local map; a calculating unit that calculates a relative position of the local map to the global map based on the one or more feature points included in the global map and the one or more feature points included in the local map, and determines, based on the relative position of the local map and secondary information associated with one or more objects, an object status associated with each one of the one or more objects; and a display control unit that at least partially visualizes the position of the one or more objects and the secondary information associated with the one or more objects in the global map onto a screen in response to an instruction from the one user among the plurality of users, wherein the one or more objects may be either nearby to the one user or in an area remote from the one user, wherein the global map acquiring unit, the local map generating unit, the updating unit, the calculating unit and the display control unit are each implemented via at least one processor.