GPS software has gotten very sophisticated.
There is software available that will let you know exactly where the picture was taken.
Even plot the location on a map.
In some countries Google Mapping can show you a picture of the front of the location.
i.e. Take Christmas photos in your house and Google mapping can let you see a picture of the front of your house.
A free photo viewing program called IRFANVIEW has an easy access to GPS information in a photo.
Click on Image/Information.
Military people who are on active duty in a hostile environment should never use GPS on their cameras.
The accuracy of the civilian GPS is about 30 meters.
If their picture (with GPS information) gets into enemy hands they could be a target.
A good enemy mortar team can drop a mortar round almost on top of where the picture was taken.
A picture (with GPS data) home to mom and dad that says here is a picture of my bunk could have consequences.
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