Because hand dryers aren't as dry as you may think...
They've got these in the Royal Liverpool hospital. They're probably the best thing in the entire building.
Anyone else made any other sightings?
I agree these are the best. We have them in a shopping mall in Vancouver, Canada. They actually dry your hands, very uncommon for hand dryers.
These are very annoying - awkward hand movements are required, they stop before hands are fully dry, and it's too easy to touch the sides. I much prefer the World Dryer Corporation's A48A model.