Bored with having to identify American 'sidewalks', traffic lights and shopfronts, I had a go at designing some British Captcha tests. Whoah - it even got it's own article in online comedy mag The Poke, where I was described as a 'funny Tweeter', which may well be the highpoint of my life to date.
The hi-tech security secrets of Air Force One
My insider's look at what keeps the President's plane so secure.