[ He pauses at that, knowing the truth of it. It makes things harder, knowing they're in separate rovers.

Then again, maybe that's the point. ]

We should meet. Regularly, to be certain of that.

[ He lifts out his device, turning it over in his hands. ]

And for this. Perhaps a code of some kind, something that's meaningful to us but not to them. We need to have a way to plan.