Why are we doing this research?

This study is an idea to ensure that children who have to eat lunch alone under busy parents do not eat spoiled food. Since SeungHyun's house is a dual-income family and Korea is legally fine to leave kids alone at home, his mother prepared lunch for him in a lunch box during vacation, and she always left the door anxiously telling him to check the food before eating. No wonder, because summer vacation is much longer, so the situation to have a lunch in a lunch box is more often in summer, and because summer in Korea is hot and humid, food is more dangerous than ever before. In addition, it is difficult for young children to distinguish whether the food is spoiled even if they smell it and taste it.

This study is an extension of our previous research "Examining Status of Food Decaying Smartphone IoT Technology," which was created primarily based on SeungHyun's experience. We aimed to make it much easier for users to access devices than in our previous research which we used raspberry pi to control the database and the calculated data. In this study we made an android app instead of using raspberry pi to reduce the number of devices need into one, and still being able to sort the data and analyze it.

We think the technology to check the decaying state of food without tasting and smelling it can help not only children but also anyone who can't distinguish the upper limit of food. In addition, if IoT technology is combined to check the corruption status in real-time through mobile phones and home networks, guardians who are busy working can be a relief and it also can be used to check the food and ingredients to maintain it in the best state.