"Minor, you want to go ask at the front if they have assistive communication devices for people who can only nod or shake their head?"

"They aren't gonna."

"Yeah but I want to make a point."

Off he goes.

"If there's something a demon needs to be able to use language for then the summoners authorize them to make written material," says the guy.

"I see. Thank you." And back he goes. "Nope."

Nod. "Given that we're on camera -"

He switches to Quenya. "If you want we can break you out right now. Timothy's guessing that he wouldn't need to Imperius your summoner if he just implicitly threatens to kill her but I think he's prepared to if he needs to; if you are not okay with that we can instead have the Singularity Maitimo kick up a big fuss about jurisdiction and get a trial expedited and hopefully it goes well. If there's a superior option I have not mentioned, nod."

Cam shakes his head.

"If you want the first option - plus your suggestions, obviously, we're not going to go off and do it before you've approved the details - nod."

Headshake.

"You want to wait for a trial?"

Sigh. Nod.

He switches to English. "Are there specific things we can do for you that I have any hope of thinking of -"

Nod.

"We're staying, obviously," Timothy says. "Are you allowed to use a computer if we happen to have brought yours with us in my pocket -"

Cam neither nods nor shakes his head.

"Gag might interfere with some functions but not all of them? Would physical books be better, I also happen to have brought some of them in my pocket."

Headshake.

Sigh. "There should exist some kind of assistive communication device that works for this, you could narrow down letters by nod shake or nothing to make it go faster - Minor, do you know how a curator'd catalogue that -"

"...maybe?" There's a chip in Timothy's pocket.

He pulls it out and loads it onto his computer. 

The most promising options track gaze.

"Well since I have your computer anyway I can give it to you and we can see what 'not yes or no' means..." He pulls Cam's computer out of his pocket and hands it to him.

Cam seems to be able to navigate existing files but not create new things.