The general mechanism is that stamps will be given to customers when their single purchase exceeds a certain amount of money.
This kind of practice is commonly implemented in different companies in Hong Kong in order to attract customers.
The practice is popular among supermarkets, convenience stores, restaurants, shopping malls and even gas stations in Hong Kong.
Convenience stores usually offer small toys or charms for customers to redeem by collecting stamps.
[4][5][6][7] Chain personal health and beauty retailers usually offer beddings, daily necessities or kitchenware for customers to redeem by collecting stamps.
[9] Chain restaurants usually offer free food, shopping discounts or lucky draws for customers to redeem by collecting stamps.
For example, there were cases of retailers receiving complaint about late treatment of stamp redemption due to stock shortage.