Wander through the medieval village of Gorbio and amazingly you come across this sign which, if you have an iPhone and the right App you simply take a photo of the 2D Tag (bar code) and you will then get a commentary relating to where you are in the village. I don't have an iPhone so can't try it but I imagine you get photos too or perhaps a video. These signs are throughout the village at all the main points of interest.
Isn't technology amazing! It's extraordinary to walk on ancient cobbles in narrow streets and come upon these signs. Old and new. Ancient and modern.