Mm... If you broke it, I think you’d know. [a wince,] it’s connected to our brains. I’ve been informed to not try to tamper with it and remove it. To do so would apparently risk death.

I can’t explain fully the how of it, as that’s rather beyond my understanding of technology... But since it’s connected to our brain, we can all use it to converse audibly, moving images such as we are now, and ‘text’ with each other at will over long distances through a network.