Alternate system of communication? That's certainly relevant to his interests-- not only for selfish reasons, but because he'd also agreed to help Martha Jones devise a sort of "ghost" CiD that couldn't be traced. So far, that hadn't panned out at all. Proficient though he is with computer systems, the CiD's something else entirely, and he knows better than to tamper around with a monitored device when he's not entirely familiar with it.

"I'm interested. In meeting your friend and--" He motions to the projects. "--supplying your endeavor. And I have a few friends, myself, who may want to touch base with you." Ana, at the very least, would probably be interested. He's sure she's dying for a little fun.