There are several advantages of electric hand dryers over other methods of hand drying.
Washing hands properly is one of the best ways to protect yourself and people around you from getting sick. It also plays a key role in the discussion about spreading germs and bacteria at public toiletts. Meanwhile there is a lot of research and literature about this topic.
But one thing reamains: People need to do it! When it comes out that 73 Million Americans did not wash their hands every day.