Geotagging adds geographical information to media through the use of metadata. Geotagging data often includes latitude and longitude coordinates, but may also include altitude, distance, and physical location names. Geotagging is most commonly used for photographs and can help people get specific information about where the picture was taken or the exact location of a user who logged on to an online service. Some digital rights management software relies on Geotagging information to permit or deny access to content.
Most cellphones are equipped with Global Positioning Systems (GPS), used for finding directions, local weather reports, or local restaurants to eat at. These mobile devices tie their GPS to the phone’s camera and automatically record the location data (geotagged data) within each image’s metadata. Law enforcement officials often use geotagging metadata in their investigations.