I call B.S. on this too. Not only would it be difficult to cheat on the DAT with the security, but honestly how many people take the DAT on the same day? When I took the DAT I was the only one in the room taking it. Everyone else was taking other grad school exams like the GRE.
Secondly, let's say a bunch of people actually decide to take the test on the same day, does Prometric actually let them all take it at the same time? It took forever to get set up before the exam, putting stuff in lockers and getting fingerprinted and everything...And then how do you cheat when the questions on the test are different for everyone? I had a hard enough time finishing some of those sections on time, no way anyone could work together on questions and still finish on time.