In Part I, low-tech identification methods were discussed, such as written journals, marking maps with photo locations, and using identifier photographs. In Part II, hi-tech identification methods which are automatic or close to it, such as using GPS technology was discussed.
In Part III, I conclude the series with a discussion of software to input missing GPS data, correct already embedded data, and locate GPS coordinates for input into image exif data, and using only manually collected information about one's photo locations.