As well as seeing old friends and making new ones I was lucky enough to be introduced to 'Augmented Reality' "Augmented reality (AR) is a term for a live direct or indirect view of a physical, real-world environment whose elements are augmented by computer-generated sensory input such as sound, video, graphics or GPS data."
String have created some demonstrations of #Augmented-Reality for their company launch. You download the app 'string' and print out their 'trigger images' from their site and then look at the images through your phone/camera lense.
It's a really great effect and great fun too. "I took this picture with the String™ Augmented Reality Showcase app for iOS. See more at www.poweredbystring.com."