Sneaky bike locking

i heard somewhere that some french guy was testing his security system, although not intended to fuck em up so to speak it was quite snazy. Basically it was a central locking approach. One you activate the electronic system all QR's become locked, using some kind of magnet system.

I suppose it needs to be something very 'manual' - something that you physically have to set and unset - I fear the idea of any electronic system that kicks in accidently while you are riding. Of course this would not be a problem if the system (if I read you correctly) simply stops people from removing the QR secured parts - but I am after some bike thief in the air action 20ft down the road.

The best ideas are often very simple, like waiting in nearby bushes with an axe.