" Every photo you take with your digital camera contains hidden
information about the images (such as the settings used to take it)
and the camera (such as the make, model and unique serial number
used to identify it).
This is known as "exif" data. "
Read more: http://www.smh.com.au/digital-life/came ... z1i17Mnyjt
http://www.smh.com.au/digital-life/came ... 1pdkw.html
Chris.