I'm just checking on you.

CNN: Will air traffic overhaul make us safer?

You all promise that you will help me with this, because I'm going to be checking in. (Applause.) You think I'm not going to check in.

WHITEHOUSE: Let's Move Rally in Jackson, Mississippi

So, I'm sort of checking my e-mails off and on, just keeping an eye on Twitter.

CNN: SHARE THIS

The ECB, the security teams and governments are all checking it out and I'm sure it will be all right.

BBC: England offered new tour schedule

Mostly it's about checking the time without giving the impression I'm hurried, picking up phone calls effortlessly, and accessing new emails so quickly it doesn't seem like work - compared to sitting at a computer in a stuffy office.

BBC: Google Glass - will we love it or hate it?

I'm not sure if we haven't any cookie fans. (Laughter.) Just checking.

WHITEHOUSE: The White House