That laptop with a display that rotates for use in either landscape or portrait mode is just one of the new concept devices Lenovo is showing off at IFA this week. The company is also showing working prototypes of a laptop stand that you never have to adjust because it does that for you. The Lenovo Smart Motion Concept uses a set of motors to lift, tilt, or turn you laptop, while using your laptop's camera and mic for face-tracking and voice control.