It's amazing the way the smart phones have taken off . Apple lead the way with their iPhone but they are being run to the wire with the Google / Android based competitors. There are thousands of apps available , from the ordinary spirit level and compass , to the banal "gaydar" apps , to the useful stuff like banking and share dealing - hell you can even make phone calls on some of them. You can easily customise your phone with ringtones and wallpapers and cases , and the Indianjo site has some great free wallpapers for the iPhone. The site is here:
Sure it wont be long before one has a teleport function.