The Eco Urinal 2-in-1 sink combo designed by Yeongwoo Kim won a 2010 iF Concept Design Award from International Forum Design. To save water, Eco Urinal is designed to use the water that was used for washing hands to flush the urine. In order to flush the toilet, people will have to wash their hands. The designer believes this method will promote people to “keep their sanitation.”
I am not sure how men do it, but women usually flush the toilet and then wash their hands. After all, isn’t the handle on the toilet one of the nastiest things in the restroom?