How to make a scary halloween costume using your phone

Mark Rober, a former NASA engineer and an ingenious costume designer, has created a brilliant line of Halloween costumes that perfectly combine classic terrifying costumes with modern smartphone technology. A free app on your phone will bring his costumes to life (or undeath, I guess, in the zombie’s case?).

After going viral a few years ago with a costume that used two iPads to make it look like a hole had been blasted through his stomach, Rober has created a line of terrifying t-shirts and monstrous masks that have special smartphone pockets. His free app (which can also be used with home-made costumes) lets you turn your phone’s screen into an element of your costume, like shifty eyes or disgusting maggots.