That's not a bad idea. Though even if he does know all sorts of private things about you, it doesn't necessarily mean that he'll disclose any of them. But it is worth a try.

[After a moment's hesitation he crams the rest of his little cake into his mouth inelegantly and fishes what appear to be two CATs from one of his pockets as he chews. He proceeds to swallow (with a bit of effort), take a deep breath, and hold out the device that Nathan gave him all those months ago.]

You'll hear a recording at first, then you get to leave a message.