might have been a better idea to build this for the Blackberry. Not that I'd install it anyway. 15 seconds vs 1 second to exchange cards and I can do cards in parallel. Imagine how silly you'd feel in an actual business setting bumping iPhones with one another... A better idea would be to point the iPhone at someone in a mtg and it identify them using some form of augmented reality. we don't need tagging, there are much better ways.