1. A method for measuring interpupillary distance, the method comprising the steps of: producing three dimensional spatial depth data from a range imaging sensor of a range imaging depth camera device to a person within a field of view of the range imaging sensor; capturing two dimensional color data of the object with a color imaging sensor of the range imaging depth camera device; uploading said three dimensional spatial data and said two dimensional color data to a computing device; mapping X, Y coordinates of the three dimensional spatial depth data with X, Y coordinates of the two dimensional color data through use of device specific mapping relationships between the range imaging depth sensor and the color imaging sensor; and utilizing the range imaging sensor to automatically locate X, Y, and Z coordinate positions of the left and right pupils of the person where the X and Y coordinate positions are centered on the pupil and the Z coordinate position is a distance from a plane located at the range imaging sensor to the surface of the left and right pupil.