This summer, JCDecaux and Outdoor Media outfitted two bus shelters?—?the humblest, most old-fashioned of civic structures, both located near City Hall?—?with WiFi hotspots, a USB port for charging devices, and displays of transit information. They also have iBeacons, a kind of digital lighthouse that is constantly signaling its presence and sending small bits of data to nearby iOS devices (but only when those users have affirmatively opted to receive that data and have downloaded an app that makes the data useful). If you push a button, the bus shelters will talk to you, providing bus times. And they use less power because they’re equipped?—?retrofitted, really?—?with LED lights.