In many ways, cheating on high school and college exams used to be a lot harder than it is nowadays. What used to take an elaborate plot to discreetly spread answers across a classroom can now be done with a swipe on a smartwatch. You used to have to steal the answer key or have a cheat sheet hidden around your desk. Now, smartphones can be disguised as calculators, information can be spread invisibly via the airwaves and tiny earbuds allow students to listen to content transmitted from a smartphone in their backpack across the room.

Source: phys.org