I encountered these two taps that are strangely handled on the same trip in two different countries. Two designs, the same principle.
The first one is from a bar in Treviso. It is sensor operated and the desired temperature is set by the handle on the side. Interestingly enough, it does not imply which side is hot and which cold. One hand needs to set on the sensor and check the water temperature while the other controls the handle and sets the desired temperature. (Needles to say I managed to burn myself).
The second one is from the Leeds airport. Its design is more futuristic and it shows the cold and hot sides. But it looks really big (it's wider than the hole in the sink).