As said, one of the central themes at the Barcelona Mobile World Congress is Smart Cities. various companies are introducing and demonstrating their technologies, which can help cities become smarter.
Buzzword in Barcelona regarding smart cities is the interoperability of technological services. Creating technologies that communicate and network, overpassing the silo structure in which data laid in the past, and often still is.
In the video below, have a look how Melissa Riofrio, Executive editor of PCWorld, shows you what traditional looking lamp-posts, drones and spacey displays can do, not only for surveillance purposes, but also for advertising.
*) Source: PCWorld