As a formally-trained fine artist, the form versus function argument rankles a bit. I chafe at giving up one over the other. Why can't you have form and function! Function will still rule over most business touch screens but the exhibit was a powerful reminder of what form can do beautifully and subtly.
For years many usability experts told us that scroll bars on a touchscreen interfaces are forbidden. Then along comes the iPhone and other smart phones and the scroll bar’s time has come.
When I started working on a client's e-commerce touchscreen kiosk application, I scoured the web looking for best practices and usability specific to touchscreen interfaces.