I have a piece of A3 paper stuck to my whiteboard here that tried to flesh out how something very much like you describe might work. Unfortunately, it was the

I have a piece of A3 paper stuck to my whiteboard here that tried to flesh out how something very much like you describe might work. Unfortunately, it was the product of a very late night booze and hashish session so is pretty much indecypherable. A pity, as I'm sure there solution to all of the world's problems is in there, somewhere...