# FlickPose: A Hand Tracking-Based Text Input System for Mobile Users Wearing Smart Glasses
## 5 Experiments to Evaluate Text Input System
### Experimental Results
Table 8 presents the average and standard deviation of the number of deletions per task and overall across all participants. The results show that the raycast method had the fewest deletions on average, while the standard method had the most. In all methods, the average number of deletions increased in the later tasks. The standard deviation was smallest for the touch-panel method only in the hiragana + kanji task, and smallest for the raycast method in the other tasks. Table 9 presents the average and standard deviation of consecutive deletions for each task and overall. The results show that the raycast method had the fewest consecutive deletions on average, while the standard method had the most. Similar to Table 8, the average number of consecutive deletions increased in the later tasks. The standard deviation was highest for the standard method across all tasks. \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline  & \multicolumn{2}{c}{**Hiragana**} & \multicolumn{2}{c}{**Hiragana + Alphanameric**} & \multicolumn{2}{c}{**Hiragata + Kanji**} & \multicolumn{2}{c}{**Overall**} \\ \cline{2-7}  & **Mean** & \begin{tabular}{c} **Standard** \\ **Deviation** \\ \end{tabular} & **Mean** & \begin{tabular}{c} **Standard** \\ **Deviation** \\ \end{tabular} & **Mean** & \
\begin{tabular}{c} **Standard** \\ **Deviation** \\ \end{tabular} & **Mean** &
\begin{tabular}{c} **Standard** \\ **Deviation** \\ \end{tabular} \\ \hline Standard & 37.64 & 5.57 & 35.34 & 4.64 & 38.79 & 7.51 & 37.26 & 5.27 \\ \hline Touch-panel & 28.11 & 7.65 & 27.09 & 6.97 & 30.25 & 8.82 & 28.49 & 7.58 \\ \hline Raycast & 33.73 & 11.39 & 30.02 & 8.97 & 31.10 & 11.04 & 31.62 & 10.11 \\ \hline \hline \end{tabular}
\end{table} 
Table 7: Average speed of text input for each task and overall. \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline  & \multicolumn{2}{c}{**Hiragana**} & \multicolumn{2}{c}{**Hiragana + Alphanameric**} & \multicolumn{2}{c}{**Hiragata + Kanji**} & \multicolumn{2}{c}{**Overall**} \\ \cline{2-7}  & **Mean** & \begin{tabular}{c} **Standard** \\ **Deviation** \\ \end{tabular} & **Mean** & \begin{tabular}{c} **Standard** \\ **Deviation** \\ \end{tabular} & **Mean** & \
\begin{tabular}{c} **Standard** \\ **Deviation** \\ \end{tabular} & **Mean** &
\begin{tabular}{c} **Standard** \\ **Deviation** \\ \end{tabular} \\ \hline Standard & 3.51 & 2.57 & 3.98 & 2.00 & 4.96 & 4.72 & 4.15 & 2.67 \\ \hline Touch-panel & 2.54 & 2.53 & 3.57 & 2.87 & 4.65 & 3.03 & 3.59 & 2.62 \\ \hline Raycast & 1.88 & 1.89 & 2.41 & 1.93 & 3.98 & 3.40 & 2.76 & 2.05 \\ \hline \hline \end{tabular}
\end{table} 
Table 8: Average number of deletions for each task and overall. \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline  & \multicolumn{2}{c}{**Hiragana**} & \multicolumn{2}{c}{**Hiragana + Alphanameric**} & \multicolumn{2}{c}{**Hiragata + Kanji**} & \multicolumn{2}{c}{**Overall**} \\ \cline{2-7}  & **Mean** & \begin{tabular}{c} **Standard** \\ **Deviation** \\ \end{tabular} & **Mean** & \begin{tabular}{c} **Standard** \\ **Deviation** \\ \end{tabular} & **Mean** & \
\begin{tabular}{c} **Standard** \\ **Deviation** \\ \end{tabular} & **Mean** &
\begin{tabular}{c} **Standard** \\ **Deviation** \\ \end{tabular} \\ \hline Standard & 1.48 & 1.39 & 1.56 & 0.74 & 2.50 & 1.24 & 1.85 & 0.84 \\ \hline Touch-panel & 1.09 & 0.80 & 1.48 & 0.56 & 1.98 & 0.65 & 1.51 & 0.61 \\ \hline Raycast & 0.99 & 0.63 & 1.21 & 0.58 & 1.77 & 0.86 & 1.32 & 0.52 \\ \hline \hline \end{tabular}
\end{table} 
Table 9: Average number of consecutive deletions for each task and overall. Finally, we will discuss the results of the post-experiment questionnaire. The average SUS scores are shown in Table 10, with the raycast method achieving the highest score. However, the two-tailed t-test at the 0.05 significance level revealed no statistically significant differences.