So you took tons of photos on your vacation, but you can't remember exactly where you were when you snapped each picture. Plenty of cameras can geotag your photos with location information, but a handheld GPS radio requires an unobstructed view of the sky to get a GPS signal. If you're shooting photos indoors, you're probably out of luck. Unless you're shooting with the 14.1-megapixel Exilim EX-H20G.