Simply swapping out the old-school incandescent, sodium or metal halide lamps with newer LED bulbs that can also contain an array of sensors can push a city on the path to becoming smarter, said Wim Efrin the Executive Vice President for Industry Solutions and Chief Globalization Officer with Cisco. According to Efrin, while cities are installing the LED lamps they often elect to put in video surveillance and even Wi-Fi access points too.