Smart city tech shows complex connections between data and sensors (+video)

BARCELONA -- At Mobile World Congress, hundreds of companies showed off new smart city technologies, some that are just in the start-up phase while others are being implemented in select cities.
One concept further along in deployment is a smart parking meter made by Paris-based Parkeon that's in use in 12,000 locations in New York City alone, and even at beaches in Australia.Parkeon showed a deluxe meter that takes credit cards and includes a display that can offer news. In Sydney, for instanc