Under the smart cities banner I have seen street lights that can be turned on/off as ambient lighting changes. Sensors in parking bays that can broadcast availability to motorists looking for a parking space.
Both laudable and important but in themselves just the application of sensors to improve service and not "Smart Cities".
Smart Cities involve a top-to-bottom cultural and digital transformation by central/local government, residents, businesses, visitors.... Good comment on three such cities.
And the integration of:
Smart sensors are part of what makes a city smart. But recent visits to Berlin and Barcelona suggest that ground-up, collaborative efforts by citizens and entrepreneurs are the essential ingredients to turn a smart city into a truly compelling place to call home.