how many digit in atm card

The most common ATM or Debit Card number is 16 digits long. This number is essential for the card's functionality and security, helping to identify and validate your account during transactions. The 16 digits are broken down into sections, including the first six digits which form the Issuer Identification Number (IIN), which identifies your card-issuing bank. The rest of the numbers are a unique account identifier and a final checksum digit used for card validation.