Private Shopping Trolley Design to Raise Customers’ Convenience and Increase Supermarkets’ Income

Currently, the COVID-19 pandemic has faded, although there are still several issues emerging regarding the existence of new COVID variants. Therefore, people are still concerned about the virus. One of the problems that arises is the use of tools simultaneously. This article aims to design a personal supermarket shopping trolley. This trolley will be designed using qualitative methods with the help of soft system methodology (SSM) and quantitative methods with the help of quality function deployment (QFD). The qualitative method is implemented by conducting interviews with supermarket customers, while the quantitative method is implemented by administering questionnaires to customers. This article proves that qualitative and quantitative methods can be used synergistically and complement each other in implementing product design. The qualitative method seeks customer needs, while the quantitative method measures customer perceptions. The final result of this article is the design of a personal trolley. Thus, people are not worried about shopping at supermarkets.