Doesn't stop an industry of cheating by having crib sheets or entire whiteboards with accessory equations, information, or potentially gasp answers on the other side of the screen. Without a 360 camera recording the entire room for the entire duration of the exam, proctor-based exams at a public venue or off-site corporate testing center should be the gold standard. (A few institutions like Stanford continue an absurd tradition of proctor-less exams.)