Movie: Harry Potter films

Honestly, there is no possible way this thing would be used for good if it was a real thing. Besides the creepo perverts who would use it to stalk and spy on unsuspecting women, you would also have master thieves using its powers to finagle all sorts of shit—from iPhones to bank money to Funyuns. Not that they actually can't afford Funyuns, but shit, when you're invisible, why bother paying for anything?