Smartphone-Rendered Holograms

NOTTINGHAM, NOTTINGHAMSHIRE, U.K.—Tech writer Arun Maini created holograms on an iPhone and more than 12 million views on YouTube with a tutorial on how to do it... with seven items. Maini created credible iPhone-rendered holograms with graph paper, a CD case, tape, a pen, scissors a glass cutter and, of course, the iPhone.