Contingency...

I think I've had enough mishaps (2 or 3 if I remember right) to warrant a contingency plan. In all the 4 years or so of cyclocommuting, I'm only now getting round to it.

Now, if I forget my badge, I shouldn't have to turn around and get on a train, I should have a spare locker key stashed to enable me to not waste time and money on the train.