This disclosure relates to a feedback and authentication system and method for vending machines. In one example system, the system includes a vending machine configured to dispense an item purchased by a user. The item contains identifying tag which, when scanned, allows the user access to information about the item. Such information may include the creation date of the item, the expiration date of the item, and/or tracking information. The user can thus make an informed decision as to the freshness of the item, which is particularly useful when the item is a perishable item, such as a salad. By offering access to this sort of information, food distributors gain credibility with their customer base.