MOS Geo-T
https://en.m.wikipedia.org/wiki/Geotagging
Geotagging
For information on geotagging content on Wikipedia, see Wikipedia:WikiProject Geographical coordinates.
Geotag information in a JPEG photo, shown by the software gThumb
Geotag information stamped onto a JPEG photo by the software GPStamper
Geotagger "Solmeta N2" for Nikon D5000 DSLR
Geotagging or GeoTagging, is the process of adding geographical identification metadata to various media such as a geotagged photograph or video, websites, SMS messages, QR Codes[1] or RSS feeds and is a form of geospatial metadata. This data usually consists of latitude and longitude coordinates, though they can also include altitude, bearing, distance, accuracy data, and place names, and perhaps a time stamp.
Geotagging can help users find a wide variety of location-specific information from a device. For instance, someone can find images taken near a given location by entering latitude and longitude coordinates into a suitable image search engine. Geotagging-enabled information services can also potentially be used to find location-based news, websites, or other resources.[2] Geotagging can tell users the location of the content of a given picture or other media or the point of view, and conversely on some media platforms show media relevant to a given location.
The related term geocoding refers to the process of taking non-coordinate based geographical identifiers, such as a street address, and finding associated geographic coordinates (or vice versa for reverse geocoding). Such techniques can be used together with geotagging to provide alternative search techniques.