Discount cards are special cards that offer holders reduced prices or special deals at various stores and businesses. These cards can be issued by retailers, grocery stores, or membership organizations, allowing customers to save money on their purchases. Some discount cards may require a small fee, while others are free to obtain. Many discount cards work by providing a unique code or barcode that customers can scan at checkout. This process helps track savings and can also offer additional benefits, such as loyalty points or exclusive promotions. Popular examples of discount cards include grocery store loyalty cards and credit card rewards programs.