POS data are widely used in the research of marketing, however, they just reveal the final choice of customers in purchasing behavior. In order to understand the preferences of customers and the competing products in purchasing behavior, it is important to observe the process how the customers choose the products. "Product Contact Data" are gathered by observing customer’s hesitation in selecting products at the store. Analysis of "Product Contact Data" shows us whether a customer is a "Planned Buyer" or "Non-Planned Buyer," and the factors to affect the hesitation time of "Non-Plan Buyer".
