I really like this idea! I especially like how you took an idea that already exists and improved upon it to make it better for the consumer by eliminating manual entry. When you say that there isn't a database for barcodes, do you mean that this is private or just not standard? One suggestion I have is to add a grocery list feature to the app. It would be nice to have this feature so that the entire grocery shopping experience is in one place. Also, the RFID tags seem like they would add cost to products. Would QR codes work in this case? I was looking through some of the other comments and I came across one about the issue in logging food from farmers markets. One possible solution would be to have an option to input food manually. This way even if there is food that doesn't have barcodes or the RFID tags, all of your food could be logged. Overall I love your idea and the look of the app is so cute and attractive! I would absolutely get this app!