Motivation System Design Experimnonts Coodusioo 急京大星 Finger Motion State o "Moving state"-Moves their finger to the key Video:Track the fingers Audio:Difficult to build the model "Locating state"-Keeps their finger on the target key position briefly Video:Difficult to perceive Audio:Detect the short pause "Tapping state"-"Tapping down state"&"Tapping up state" Video:Difficult to measure o Audio:Measure the depth information 4口…94至子2刀00 Ke Sun,et al Mobisys'18 June 3.2018 Depth Aware Finger Tapping on Virtual Display 11/22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Motivation System Design Experiments Conclusion Finger Motion State ”Moving state”–Moves their finger to the key Video: Track the fingers Audio: Difficult to build the model ”Locating state”–Keeps their finger on the target key position briefly Video: Difficult to perceive Audio: Detect the short pause ”Tapping state”–”Tapping down state” & ”Tapping up state” Video: Difficult to measure Audio: Measure the depth information Ke Sun, et al. Mobisys’18 June 3, 2018 Depth Aware Finger Tapping on Virtual Display 11 / 22