The ATP Photo Finder is a GPS tracking device that helps in geotagging your photos. You carry the device with you while snapping your photos. Once you've finished, you insert your digital camera's memory card into the Photo Finder. The Photo Finder will then synchronize your photos with its stored GPS locations, which then geotags your photos for you. The geotagging is based solely on timestamps so it's important that before you start taking photos, you've synchronized your Photo Finder's time with the time on your digital camera.