They do this at Ben Gurion Airport too - make you turn on all your electronics, the Israeli airports are praised for their security procedures - right? eg: http://www.huffingtonpost.com/2013/12/23/airport-security_n_...
Maybe they do check Muslims more thoroughly, that would make sense. I never took any interest in it, so cannot confirm it. (In the Army, I would totally pay much more attention to Arabs than to other civilians, but that's so painfully obvious, right?)