Motivaticn System Degn Experiments Coodusio 动京大盛 Motivation Traditional tapping-based interaction: o Require physical devices o Limit the freedom of user hands ·口0,4至·子2刀00 Ke Sun,et al. Mobisys'18 June 3.2018 Depth Aware Finger Tapping on Virtual Display 2/22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Motivation System Design Experiments Conclusion Motivation Traditional tapping-based interaction: Require physical devices Limit the freedom of user hands Ke Sun, et al. Mobisys’18 June 3, 2018 Depth Aware Finger Tapping on Virtual Display 2 / 22