1. PIN
A Card PIN, or Personal Identification Number, is a 4-digit code unique to each solid-issued card. It ensures that the cardholder is making the transaction. The Card PIN could be required at an ATM or at certain point-of-sale (POS) devices, where it must be entered to complete the transaction. By default, the card does not have a PIN set. A new PIN can be set by calling the Set a New PIN API.2. ATM Transactions
ATM PIN transactions involve the cardholder using their card to withdraw cash by verifying the transaction using a secret PIN. Here is how the process works:- Card Insertion: The cardholder inserts the card into the ATM’s card reader,
- PIN Entry: The cardholder enters their secret PIN on the keypad to authenticate the transaction. This is a security measure to ensure that the person using the card is the legitimate cardholder.
- Authorization: The ATM communicates with the bank or financial institution that issued the debit card to seek transaction authorization.
- Transaction Approval or Decline: After PIN verification, the transaction is either approved, with funds deducted from the cardholder’s account or declined due to insufficient funds or other issues.