

The remaining card number, except for the last digit, is your personal account number, the last digit is the Luhn check digit.

The leading 6 digits in the front are called the " bank identification number (BIN)", also known as the " issuer identification number (IIN)", which is why the first 6 digits of some credit card numbers are the same. It is similar to a credit card, but unlike a credit card, the money is transferred directly from the cardholder's bank account when the transaction is executed.Ī credit card number or debit card number consists of two parts. You can instantly lock/unlock transactions on your card or even set daily limits for Point of Sale (PoS), online/ecommerce, contactless transactions and ATM withdrawals by logging into Citi Mobile App or Citibank Online and navigating to ‘Manage Card’ functionality on the card summary/savings screen.Debit cards (also known as bank cards, plastic cards or check cards) are plastic payment cards that can be used instead of cash when shopping. This feature is available 24*7 every day. Please refer to the demo below for Citibank Online (Credit Card):Ģ.Click on Banking/Credit Card (Credit Card journey highlighted here)Ĥ.Unlock International transactions using Quick lockĦ.Set up limits and usage for POS, Online, ATM and Contactless transactions for domestic and international usage

