Hot Air Hand-driers. What is it with these devices? Great in theory, but so often infurating in practice.
Too much heat, not enough fan. So your hands are scorched, but still wet.
Too much fan, not enough heat. Hands cold, and still wet.
Unit activated by a sensor which requires your hands to be very close to the bottom of the machine, and a few inches to the side of the hole where the air comes out. As soon as you move your hands around, the blasted thing switches off.
Trust me. These devices are sent by hostile foreign powers intent on disrupting our equilibrium. They must be defeated.