York may be one of our oldest cities but it now claims to offer more ways to explore its attractions through technology than any other in the UK. Among them is a pioneering app - the world’s first according to its tourist office - featuring holographic guides. Developed in cooperation with appeartome.com it makes characters from the city’s past appear on the screens of visitors’ mobile devices at appropriate points on their itineraries. Details of this and other apps are at visityork.org. Free wi fi is available throughout the city centre with a free log in which you can get from the visitor centre.