This product design research is devoted to the usage of biometric data, especially blood sugar rate(BS), for food selection in daily life. Biometric data is normally applied in medical field to raise the quality of medical diagnosis and treatment etc. By the development of sensing and wireless technology, the opportunity of collecting and analyzing time-based biometric data has lowered the threshold of the usage in individual life. This technological trend makes the data utility wider. The report of Mobile World Congress(MWC) 2018 demonstrates how large the market of biometric products and technologies has become. More specifically, a non-invasive blood sugar sensor has been developed and it is going to be introduced into consumer electronics more and more in the years to come. In this research, we suggest how to design a product of everyday usage maximally taking individual’s blood sugar level into account.