Shortly after my arrival here, in fact, but it hasn't happened again. And no, I can't remember anything, as I say I remember the droids getting me, I lost consciousness and when I woke up I was here again, just being a mess which I wasn't before I was taken.

That's true, not to mention that if they truly just use that to keep an eye on us it would be blatantly obvious that something is going on if suddenly everyone keeps them closed. I think they must use something else, like the bar-codes behind our necks or something, maybe we just can't see the cameras they really have around. All that shifting thing sounds capable of doing that.