... is the multi-touch screen !
The Lifebook T730 has a rotatable touch display. It is multi-touch, so it's possible to interact with multiple fingers on the screen. The touch screen allows several nice things such as drawing with the stylus, which is much more convenient than a mouse or trackpad.
The multi-touch display adds some features and allows you to zoom pictures and websites.
With its small size, we can draw even outside :p