Users in many regions can also purchase PlayStation Network Cards or Tickets in set denominations from retailers including supermarkets or video game stores. These funds are redeemed on the PlayStation Store when the user enters the unique 12-digit code found on the card into the PlayStation Store.  Nintendo themselves later adopted this currency system for their succeeding eShop. The Store's account however is region locked and generally only accepts credit card that is billed in and PlayStation Network Cards purchased from the same country selected during the registration process, which cannot be changed afterwards.
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