At Mobile World Congress, hundreds of companies showed off new smart city technologies. Smart city technology is taking off, thanks to a growing number of low-cost modules and sensors that can be connected wirelessly to cloud-based services for payments and other services. Data collected by inexpensive sensors is collected and analyzed in a big data manner, it can be used to orchestrate smart city initiatives. In coming years, data from sensors in cars, embedded along highways and in traffic signals is expected to be shared with the wireless networks surrounding crowded streets.”]