Pocket-Lint: Go in to the Android Market or the iTunes App Store, search under "augmented reality" and you’ll find that at least half the results come under travel and tourism. These industries have been very quick to pick up on this emerging technology but why should that be so more than the other sectors? Which are the leading travel apps out there? Have any of them got it right yet and, if not, what’s holding them back but, most of all, of course, what is it that AR can ultimately do for the tourist? Step this way and we’ll take a look.