Virtual interactive system

A virtual interactive system that operates in a device. The virtual interactive system includes: a space simulation unit, generating a virtual space based on spatial information of a physical space; a positioning unit, determining a position of a point of interest or a location of a physical user in the physical space, and converting the location into a corresponding position in the virtual space, wherein the location determination unit further receives a virtual location of a sign-in person into the virtual space; and an interactive control unit, determining an interaction situation between the sign-in person and the another sign-in person, between the sign-in person and the point of interest, or between the sign-in person and the physical user, based on at least two of the virtual location and the corresponding location(s).