Combined with a water-based attractant derived from human sweat (collected from a wrist band), the trap mimics the scent, moisture, and temperature profile of a sleeping body.
The wrist bands were conspicuous by their absence in the second half.
People have tried different ways to prevent the condition, including wrist bands and anti-nausea drugs.
Some warehouse workers already wear wrist bands or headsets that measure their productivity and location in real-time.
They fitted 495 people aged 35 to 47 with sophisticated wrist bands that tracked subtle body movements.
