When he talks about the interface [1] I think he touches a really important point: you have to know the user and usage to decide what interface to use. As he s

When he talks about the interface [1] I think he touches a really important point: you have to know the user and usage to decide what interface to use. As he says it is very tempting to use modern technology like touchscreens. But because he knows he will touch it with oily fingers that's not an option. Great project! [1] Part 1: Proof of Concept @15:10