Wakey wakey, Captain

Airline pilots are in danger of falling asleep on long-haul flights, says
British firm Cambridge Neurotechnology. The company is patenting a device like a
large wristwatch which continually monitors the pilot’s alertness (GB 2 334
127). The device has a motion sensor which registers any acceleration greater
than around 0.05 g, at a frequency of a few hertz. If there is no
movement of this type at least every few minutes, the device sounds a loud
alarm.