In a way cock It looks like a step backwards compared to the valves, which open onto a sensor. I am a little funny when it comes to the probe taps well, I absolutely do not suffer. Normally, because about half of the time, they love my presence to ignore. Instead of a sensor, you could seat a valve that automatically activated when you put through your hands to a small lever in such a way.

This is not something that would work for public toilets, but it would be nice for a bathroom in the house. The disadvantage is that you need to disinfect all the time because the dirty hands always feel pressed on the piece of metal. At least he will try to reduce water use, the more it also has a feature of Bach. You can buy one for $ 39 Gaiam.