Quickly activate your bank card and get your general activation questions answered. Activate your USAA credit, debit or prepaid card online. When you activate your ReliaCard, you must also choose your PIN. You need your PIN to withdraw cash or check your balance at an ATM. Keep your PIN safe! Do. Every one of the clients with a Cash App record can get a free money card that works like some other charge or visa card. You can likewise arrange a money.