RFID tag, compatible transceivers and a centralized database. Once attached to your car's windshield, the tag communicates with the transceivers installed within a given parking lot, alerting the system whenever your vehicle enters or leaves. An application running on the central server, meanwhile, keeps track of how much time you spend in the lot, and charges your debit card accordingly. Researchers have already installed Viatag at car parks in Essen, Duisburg and Munich, and are hoping to expand it to other locations. It might not be as sophisticated as some of the other automotive communications systems we've seen, but it could come in handy during those moments when you really don't feel like swearing at a parking meter. Cruise past the break for the full PR.