a prepaid card refers to a prepaid voucher issued by a card issuer through a specific carrier and form for profit, which can be used to purchase goods or services in a specific institution. According to whether the cardholder's identity information is recorded, it is divided into registered prepaid cards and bearer prepaid cards; According to different information carriers, it can be divided into magnetic stripe card and IC card.

Prepaid card shopping is a transaction form after credit card. Prepaid card is actually an auxiliary currency, so it is called P card for short in Taiwan Province. This kind of card is usually a thin plastic card printed with exquisite patterns, so it is also called plastic money. The use process of prepaid card is: consumers pay a limited amount of cash in advance in a certain system-wide store and get this card, so they can make one or more direct purchases in these stores without cash and only with this card within the prepaid amount.