http://www.aaa3.net/how-to-scale-cards/
Giz Explains: How Multitasking Works on a Phone [Giz Explains]
# gizexplains Multitasking! On phones! Everybody does it now. But each smartphone platform does it differently. Here are the various tricky ways that the major platforms try to juggle multiple apps. More »
How to do Card Tricks : Scaling Playing Cards
