Russian Gadget

There is a story in Russia Today that someone in Russia (where else?) has invented a device which will prevent you from going to sleep at the wheel. It is a simple ring worn on your middle finger which rings a bell or vibrates as soon as your metabolic processes start to slow down. I hope it works - we could use a device like that. Too many drivers fall asleep at the wheel and then crash big time. Who can save you from that?