Users receive a code, printed in a format that can vary, and that contains, an attractive design, the business logo, a QR and an 8-character number.
Each code is unique and can only be used once, so that a code is only valid for one user.
After scanning the code the user must give a score to the cover of the establishment (from 1 to 4) and can add an optional comment about his opinion.
After evaluating the cover, its corresponding stamp is included in the user's collection within its application.