Cardholders can reset their credit card PIN through an ATM or online. If you reset your PIN at an ATM, many banks allow customers to enter a new four-digit number. When selecting a new PIN, it is essential to remember that you cannot use the same number more than once. Additionally, PINs must be kept secure and not shared with anyone else. If you reset your PIN online through your net banking account, customers can select a new four-digit number or use an automatic PIN generation system.