As discussed in Part I of this Photo Identification series, one of the most classic problems of the vacation photographer is identifying one's photographs after returning home. Often when you look at your photos weeks after making them, it can be difficult to remember where you took them, and what each image's subject is.The low-tech identification methods discussed in Part I, such as written journals, marking maps with photo locations, and using identifier photographs work, but many photographers consider them too tedious and time consuming. There are some hi-tech identification methods which are automatic or close to it, but I caution anyone who thinks they are foolproof, to think again.
Each of these hi-tech methods involve GPS (global-positioning system) technology. GPS devices typically identify their position by longitude, latitude, altitude and compass heading, plus date and time.
Today, some digital cameras have built-in GPS units, some cameras are GPS ready, and other cameras can have GPS information added to their photos' exif data, but don't have the capability to embed the information directly themselves. It must be added later, via a computer.
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