The Mydoh Smart Cash Card can be used through the physical card, or the digital card. The card details can be accessed through the app in order to make online purchases, whereas the physical and digital card can be used to make purchases in store. Apple Pay: Kids who are 13 and older can use Apple Pay for in-store purchases by adding their Smart Cash Card to their Apple Wallet, right from the app. Google Pay and Samsung Pay: The Smart Cash Card is currently unavailable to be used on Google Pay and Samsung Pay. For more information, please feel free to contact our customer support team.