I've seen the opposite happen - the MacBook screen turning off - when placing an open macbook on top of a closed one. I'm guessing that case is to do with magne

I've seen the opposite happen - the MacBook screen turning off - when placing an open macbook on top of a closed one. I'm guessing that case is to do with magnets activating the closed-sensor. I've replicated this with a Nexus 6 by placing it over the speakers of an MBP (it locks the screen, rather than turning it off) which also suggests magnetic? I'm thinking Motorola planned a Nexus 6 case similar to the Galaxy Note flip cover.