DC I believe what you are describing
What Microsoft used to call their Surface Project where the desk was the monitor and input device and everything was built into the desk.
That would work with Touch Screen though to be perfectly honest just Touch isn't enough we need to make sure that the Monitors used in things like that also have some way to separate the different users and not just rely on being touched.
When you look at something like that used to control some device it needs more than what Touch by itself can supply. Imagine a Computer Input/Display device in say a Nuclear Power Station being able to accept any input that was put in through the Touch Screen.
Way too dangerous and the chances of something going wrong because the wrong person used it or some other reason are way too high.
At least with a Keyboard and Conventional display a Password is better but when you move the Control Elements into the Desk itself you need much more than just touch.
However just using a conventional type Monitor as a Touch Screen in a Desktop for business is going to fail the Occupational Health & Safety Test every time.
Col
Moderator 
