according to the official website information of switch, the game purchased by switch can be bound with visa credit card and MasterCard credit card. The first time you bind a credit card, you can enter the eshop store and choose to log in. You can enter the credit card information input interface and fill in it in order.
Nintendo Switch, referred to as NS for short, is a mainframe released by Nintendo in March 217, which adopts the integrated design of home computer and handheld computer.