Label printing
After confirming the label image for print, we had to determine the size and definitions on each label. For this purpose, the information on the purchased products, such as definitions of serving, weight of each serving, total weight of the product, and the label size were entered into Excel 2010 software, and understandable serving, label size, energy, sugar, salt, fat, physical activity level per minute, required number of labels, and color were added to the information of each product. According to the size of various food labels on the products, the 2 × 3 cm size was applicable to all dairy products, cakes, biscuits and sugar-sweetened beverages. After print, the readability of the labels was confirmed by the researchers.