The Golden Idol said:

Captain Antilles said:

Well, here's an idea: maybe they use the force to keep lightsabers on/switch them off? I mean, if it was how they were trained then maybe using the force to keep a switch or a pressure sensor on would be easy, almost second nature. This is sort of an imperfect idea, I know, as I'm not sure how great Luke's force abilities would have actually been in ANH/ESB, but if it were easy enough then he might have been able to catch on quickly? It would certainly account for lightsabers staying on/going off at a user's will even when not in said user's physical possession. Thoughts?

That would make sense, except in ESB, Han uses Luke's lightsaber to slice open the tauntaun, and as far as we know, Han has no Force abilities.

Nothing is stopping Han from pressing and holding the button manually for the 2 seconds required to expose some intestines to the camera.