http://www.denialville.com/faucet-features/

how do the modern touch Faucets know whether you want hot or cold?
they are the newest feature on Faucets. just touch them and the water comes out. If the user wants hot water only how does that work?
That's next gen you are getting ahead of yourself...the ones that are marketed now give one temp.
There is this one but it ain't cheap http://www.autotouchfaucets.com/ (starting at $399.00)