Abstract
Many consumer products adopted IoT and AI technology, especially in home appliances. Customized product and service for each user’s lifestyle have increased, which means it's required in the product development that any developers get to pay attention to user's context of activities, and find what they really want. However, there is not many methods to structurally understand the context of use, not surprisingly for novices . In this study, we clear the problem that novices face in Contextual Design, and find a way to make the method easier to use.