Geotagging: Fotospot makes digital cameras GPS-capable. Rube Goldberg Geotagging. Honestly, people, if you actually need to carry around a local WLAN with a server to geotag your photos, then it doesn't matter if the server is shoved into the hot shoe of your camera - that's just silly. Just buy a camera that has on-board geotagging. Or a simple tip: with the iPhone and the built-in camera app (because of the metadata) just take a photo at every location, and then later transfer the geodata from these images to the others - there's already finished software for various systems that does this.