Bike Lock

A while ago I had a request to design a bike lock, which I have been musing about for a while and now I've reached a point where I'm willing to admit defeat.  It's not that I can't design a good bike lock, but what I can't really do is improve upon existing designs.  So, I started thinking about making the bike become the lock, something that I also think has been done, by turning the frame into a carribena.  But again, maybe I'm asking the wrong question.  All too often people approach designers and ask them to design them an object, not a solution to a problem.  It should not be about designing another bike lock or anything else that already exists, but addressing a problem, which in this instance is stopping a bike from being stolen. Maybe the idea would be to design a bike so light and foldable or compact, that you wouldn't need to lock it up.  You could just carry it into the office and store in under the desk, or put it in your bag and carry it in to the classroom.  Can it currently be done in a staisfactory way? Who knows, but asking different questions and addressing problems, not redesigning current solutions, is the best way to innovate and come up with something (hopefully) better - time to start musing again.