A coupon is used for products on which a discount is given. The label with microperforation can easily be torn off at the checkout, so that the additional information can be read or scanned on the back of the coupon.
Cookies are small data or text files that are installed on your computer or mobile device when you visit a website or use a (mobile) application. The cookie file contains a unique code with which your browser can be recognized by the website or web application during the visit to the online service or during successive, repeated visits. Cookies can be placed by the server of the website or application that you visit, but also by third-party servers that may or may not work with this website or application.
Cookies generally make the interaction between the visitor and the website or application easier and faster and help the visitor to navigate between the different parts of a website or application.