Adding money to a child's PS4 wallet is easy. All you need is a PlayStation 4 and a credit card. To add money, open the PlayStation 4's console menu and select \\"System Settings.\\" Scroll down to the \\"Wallet\\" section and select \\"Add Money.\\"Enter the child's PS4 account name and password and click \\"Add.\\"Your child's PS4 will now be able to accept new money.