## 4 Results and Discussion  
### VR Shopping Model Evaluation  
The functionalities of the VR shopping system have been fully implemented, as detailed in the previous section. However, the sensory experience and consumer satisfaction require validation through practical application. The virtual packaging multi-sensory evaluation model is intended to assess and enhance the VR shopping system. The experiment involved 25 participants, both men and women aged 18-30, who had previously participated in the eye-tracking experiment described in Section 3.2.1. The VR shopping system was packaged into an installation file and deployed on the PICO Neo3 all-in-one device for testing. Test participants were instructed to wear the device and were trained in the operational procedures.  
After completing the training, participants entered the VR shopping system. They engaged in activities typical of their shopping habits, such as walking, browsing products, viewing product information, picking up items, opening packaging, adding items to the shopping cart, and completing the checkout process. The test PICO Neo3 VR all-in-one duration was unrestricted. Upon task completion, participants evaluated the system using the virtual packaging multi-sensory evaluation model. The evaluation scale ranged from 1 to 10 points, with a score of 7 or higher considered passing or satisfactory. The evaluation scores for each indicator from all 25 participants were summed and then averaged to produce the results shown in Table 12. The total score was subsequently calculated using Equation (5):  
\[X_{\text{VR Shopping System}}=\sum_{i=1}^{17}G_{i}W_{i}=6.68\]  
\begin{table}
\begin{tabular}{c c c} \hline \hline
**Criteria Layer** & **Sub-Criteria Layer** & **Score** \\ \hline \multirow{3}{*}{Interactive behavior (B1)} & Consistency of operational behavior (C1) & 6 \\  & Accuracy of information transmission (C2) & 5 \\  & Rationalization of the control module (C3) & 6 \\ \hline \multirow{3}{*}{Color transmission (B2)} & Rationality of color application (C4) & 7 \\  & Coordination of color and environment (C5) & 8 \\  & Replaceability of color groups (C6) & 7 \\ \hline \multirow{3}{*}{Sensory experience (B3)} & Hearing (C7) & 7 \\  & Vision (C8) & 7 \\ \cline{1-1}  & Touch (C9) & 5 \\ \cline{1-1}  & Smell (C10) & 3 \\ \cline{1-1}  & Taste (C11) & 3 \\ \hline \hline \end{tabular}
\end{table}
Table 12: Virtual packaging multi-sensory evaluation model score.  
Figure 12: Purchase stage rendering: (**a**) shopping cart and (**b**) cashier settlement.  
Table 12 presents the evaluation results. The VR shopping system received a total score of 6.68 points, indicating a generally low evaluation of the consumers' sensory experience. Among the components receiving scores below 6 were the consistency of operation behavior, accuracy of information transmission, and rationality of the control module in interactive behavior, each scoring a maximum of six points. The overall score remains low. The effectiveness of the sensory experiences related to touch, smell, and taste was suboptimal. Given that the system did not incorporate the sensory experiences of smell and taste, the tactile experience was the primary focus. Additionally, the accuracy of packaging function realization requires improvement.