A gift card is a prepaid card that can be used as a form of payment at specific retailers or for certain services. They come in various denominations and can be purchased at stores, online, or through mobile apps. Gift cards are popular for birthdays, holidays, and special occasions, allowing recipients to choose their own gifts. Most gift cards have an expiration date and may come with fees if not used within a certain period. They can be physical cards or digital codes, and many retailers, such as Amazon and Target, offer their own branded gift cards.