Geo-tagging - A definition

“Geotagging, sometimes referred to as Geocoding, is the process of adding geographical identification metadata to various media. This data usually consists of latitude and longitude coordinates, though it can also include altitude, bearing and place names.

Geocoding also refers to the process of taking non-coordinate based geographical identifiers, such as a postal address, and assigning geographic coordinates to them (or vice versa).

Geotagging can help users find a wide variety of location-specific information. For instance, one can find images taken near a given location by entering latitude and longitude coordinates into a Geotagging-enabled image search engine. Geotagging-enabled information services can also potentially be used to find location-based news, websites, or other resources.”

http://en.wikipedia.org/w/index.php?title=GeoTagging&oldid=173260645

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