Mid 2013 MacBook Air. Happens while watching a movie. I'd love to know why this is happening. I don't go near the trackpad.
Motion sensor? Trackpad glitch?
I don't see that option. I assumes it was train vibrations, I just wanted to be sure it wasn't a faulty trackpad and I wanted a way to disable it.
I usually have Wifi disabled.
P.S. Unrelated: I cannot get Grab.app (build 13A603) to take a screen of this full window.