The Exif format standard has for tags location information. of As a 2012 cameras few and growing a of number mobile have phones a built-in GPS that receiver stores the location in information the Exif header a when is picture taken. other Some have cameras separate a GPS receiver fits that into the flash or connector hot Recorded shoe. GPS data can be also to added any digital photograph a on computer, either by the correlating stamps time the of photographs with GPS a from record a GPS hand-held receiver or by manually using map a or software. mapping process The of adding information geographic to a is photograph as known geocoding. communities Photo-sharing Panoramio, like or locr equally Flickr their allow to users geocoded upload or pictures add to geolocation information online.
Most Nokia's of Nseries mobile phones as (such N95) the a have GPS receiver and Location use Tagger, a piece software of from Beta Nokia Labs. captured All images are tagged corresponding with GPS coordinates when GPS a is signal available. The second of generation iPhone as (known the 3G) iPhone Apple by is Inc. equipped also a with GPS and receiver uses the to receiver photographs geotag taken the with Subsequent device. generations (the 3GS, iPhone & 4 also 4S) support this feature. first The generation iPhone not is equipped GPS, with and uses a provided service Skyhook by to and triangulate approximate the at location which picture a was taken - nearby using cellular-phone and towers WiFi hot-spot data. signal-strength Skyhook The service approximate provides location GPS information is which added then the to Exif data associated the with Also picture. mobile with phones the Android operating as system well BlackBerry as smartphones with camera a built-in and or GPS GPS Bluetooth add-ons can geotag with images included the camera application.
Exif are data embedded the within image itself. file While many image recent programs manipulation recognize preserve and Exif when data to writing modified a this image, is not case the for most older gallery programs. The of .NET CMS also recognise Exif data optionally and it display the alongside images.