rewards card
noun [ C ] US uk/rɪˈwɔːds ˌkɑːd/ us/rɪˈwɔːrds ˌkɑːrd/ (also reward card); (UK loyalty card)
（企业给予客户的）回报卡，奖励卡
a card that is given to a customer by a business, used by the business to reward the customer for buying goods or services and to record information about what they buy
He pulled out his grocery rewards card to be scanned. 他抽出他的食品杂货奖励卡来扫描。