MyCokeRewards is a rewards program started by Coca-Cola for drinking Coke products. In this rewards program, you can earn points by looking under the caps of Coca-Cola products (all 13 of them are listed on the MyCokeRewards website) and also by looking on packaging of Coca-Cola products. There are no codes on Coca-Cola cans. Once you accumulate enough rewards points, you can spend them on merchandise, or use them on an instant win or a contest (a bad idea). That is what MyCokeRewards is.