Peace be upon you Good evening I have this product: Google Maps cards. Of course, it is known that Google Maps is the interface for any store. So, you put this card behind any customer's phone, and automatically at the same time, it takes them to the store's reviews. It's a process that takes two seconds, after which they quickly rate, and congratulations to you. There are many remaining details for those interested, contact me. I consider one unit individually for 30. And whoever takes more than one unit, the unit is 25. Available in two colors.