Alarmclock puzzle

[AVee]

On Tuesday 13 May 2008 18:34, Mo Abrahams wrote:
> Although people will have to start setting their final alarm for ten
> minutes earlier than they really need to get up, to give them time to
> solve the really hard puzzle without making themselves late anyway.
>
> How sensitive is GPS? An alarm that doesn't turn off until you leave
> your bedroom would be a good one.

The GPS might just be sensible enough, problem is though, it can only measure 
where the phone is. I can just see those neo's (freerunners, sorry) flying 
right out of the window. :)

AVee

-- 
Write a paper promising salvation, make it a 'structured' something or a 
'virtual' something, or 'abstract', 'distributed' or 'higher-order' or 
'applicative' and you can almost be certain of having started a new 
cult.
  -- Edsger Wybe Dijkstra