In this day and age, it's increasingly difficult to prove that you didn't actually do something, when it involves technology... But, when you've nothing to hide...

I was on my way home this evening, going into the Tube, and a reminder buzzed on my PDA. I carry the thing in my pocket, so it gets bashed about a bit, seen better days, sorta thing...

Whip the phone out, click the reminder away, se that it'd got the camera screen up, so I licked that away too, and get a...