— a GPS module allows determining geographical coordinates using a satellite navigation system. In cameras, this feature is most often used for automatically adding geotags (location coordinate marks) to photos. However, there are other ways to use location data. For example, "tourist" cameras may have databases of landmarks with automatic hints, or even fully-fledged navigation applications. In professional models, GPS can be part of the work of special programs for shooting the starry sky, and so on.
