System and method for grid-based geo-fencing service

A geo-fencing service method in a grid-based geo-fencing service system, the geo-fencing service method comprising:

• receiving location coordinates of a moving object;
• and
• determining whether the moving object is present in an area including one or more grids with reference to area information for the area,
• wherein each of the one or more grids includes a set of points with the same effective coordinates, and
• wherein the same effective coordinates are obtained by rounding down coordinates in the area to a predetermined effective decimal place.

A computer program stored in a non-transitory recording medium that is combined with hardware and configured to execute a method, the method comprising:

• receiving location coordinates of a moving object;
• and
• determining whether the moving object is present in an area including one or more grids with reference to area information for the area,
• wherein each of the one or more grids includes a set of points with the same effective coordinates, and
• wherein the same effective coordinates are obtained by rounding down coordinates in the area to a predetermined effective decimal place.