## 5 Conclusions  
The presentation of multi-sensory packaging and packaging materials within a virtual environment must address not only the functional implementation of system software but also emphasize the sensory experience of users. In this context, this study addresses the challenge of evaluating multi-sensory design in virtual environments by developing a comprehensive multi-sensory evaluation system and model for virtual packaging. The goal is to provide engineers with effective multi-sensory design strategies for packaging in virtual environments. A VR shopping system was constructed using potato chips and cola as case studies to validate the evaluation model. The findings and verification of the model are summarized below. (1) This study presents a multi-sensory evaluation model for virtual packaging, developed using the analytic hierarchy process (AHP) to support the multi-sensory packaging design within virtual environments. The model is structured into five criteria layers: interactive behavior, color transmission, scene experience, sensory experience, and packaging function, with 17 indicators across these layers. Each indicator is quantified, and weights are computed using the nine-point scale method and expert judgment. This model offers engineers an effective decision-making tool for determining how packaging should be represented in virtual environments. However, certain limitations of AHP must be acknowledged. A significant issue is the rank reversal phenomenon, where the addition or removal of alternatives can alter the ranking of remaining options, potentially leading to inconsistent decisions. Furthermore, AHP assumes that the evaluation criteria are independent, yet in practice these criteria may be interdependent, influencing the overall decision-making process. Neglecting this interdependence can lead to biased or inaccurate results. (2) In the Internet age, the influence of packaging on consumers' sensory experiences within online shopping environments is of considerable importance. This study employs virtual reality (VR) technology to develop a VR shopping system, focusing on the display and interaction of packaging within this system. The evaluation results of the model utilized have led to significant improvements in the VR shopping system. These results demonstrate that the evaluation model proposed in this study effectively guides the multi-sensory packaging design in virtual environments. Furthermore, future research should focus on VR shopping systems' long-term impact and consumer engagement to ensure sustained success. Investigating how consumer satisfaction and ease of use evolve over time will be crucial for identifying issues related to system fatigue or diminished novelty, thereby enhancing the VR system. In the online shopping environment, the multi-sensory evaluation of product packaging based on VR technology is a multi-criterion decision problem, and the sensory experience is the subjective feeling of consumers. Moreover, there is no one-to-one corresponding relationship with the functional realization of packaging in the virtual environment, but through the combination of two or more packaging colors, interaction, environmental sound effects, etc., it provides consumers with different sensory experience. Based on this situation, this study proposed a virtual packaging multi-sensory evaluation model. Although we have studied the packaging sensory expression of the shopping environment in the VR shopping system, only visual, auditory, and tactile sensory experiences are realized in the system, and there is a single type of commodity packaging. How can the smell and taste experience that packaging brings to consumers in the virtual environment be realized? It is of great research value to explore ways of smelling and tasting in more types of packaging in VR shopping systems in future studies. In the Internet era, the technology iteration speed is fast, and this study only focuses on virtual reality technology for packaging multi-sensory research.