Algorithm 4 Algorithm for dwell time detection.

Input: data frame from Leap Motion as L

1: set $i=0$

2: while $V_i\ne 0$ do

3:  $i=i+1$

4: end while⟶ A

5: calculate smoothing ($i\to n$)

6: calculate slope finding (-) and (+) $⟶B$

7: compute thresholding ⟶ suppress noise

8: compute find zero