Location identifying method and location identifying device

A location identifying method for obtaining position information of mobile communication terminals and identifying a location where lines of sight of users having the mobile communication terminals are concentrated, the location identifying method comprising:

• a direction calculating step of, by a direction calculating unit, calculating directions of the users of the mobile communication terminals based on the position information of the mobile communication terminals, the position information including a plurality of positions of each mobile communication terminal and time information for each of the plurality of positions;
• a sight estimating step of, by a sight estimating unit, estimating a plurality of different line of sight measurements of the users based on the directions of the users of the mobile communication terminals calculated in the direction calculating step;
• and
• a location identifying step of, by a location identifying unit, identifying a location where the plurality of different line of sight measurements of the users are concentrated based on multiplicity of the different line of sight measurements estimated in the sight estimating step with a predetermined boundary, wherein the location identifying step identifies a location where the different line of sight measurements of the users are concentrated by counting how many of the different line of sight measurements of the users crosses with side faces of a building.