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Diagram illustrating the ISO 8583 F55 field structure for ICC system related data

ISO 8583

ISO 8583 Field Descriptions (F55)

F55 - INTEGRATED CIRCUIT CARD (ICC) SYSTEM RELATED DATA: the field where EMV data is written on chip cards. It consists of components such as Position, Private Data Subelements, PDS Tag, PDS Length, and PDS Value...

Diagram illustrating how a contactless offline transaction is processed

Merchant & POS

Can a Contactless Offline Transaction Occur?

A contactless offline transaction can occur. If the amount is lower than the floor limit defined on the POS and the card also allows offline authorization, the transaction can be completed offline. Offline transactions are periodically sent by the POS to the acquiring bank.

PIN pad screen on a payment terminal for entering a card PIN

Credit Card

What Happens If I Enter the Wrong PIN on Card Transactions?

Nearly all transactions where credit and debit cards are used physically require a PIN. The PIN represents the cardholder's identity. Here is what happens if a customer enters the wrong PIN too many times and how the card is restored.

ATM machine vulnerable to hacking and fraud

ATM

Can ATMs Be Hacked?

ATMs are among the channels banks use most to serve customers. Besides being one of the most important channels, because they physically dispense cash and give access to a customer's account, many fraud cases occur at ATMs.