Beaming data with light is hardly a new thing, but lately we've seen a number of attempts at making it rather more usable and, more interesting, rather more speedy. We're starting to get the feeling that those maybe/maybe not dangerous microwave-based systems have had their days numbered. The latest to beam bits with blinkenlights is a team at the Fraunhofer Institute for Telecommunications in Germany, which will be showing its stuff at the always happenin' Optical Fiber Communicat