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EMV
The AID tells the terminal which applications are present on a chip during a POS or ATM transaction. What does the AID do? It lets the terminal determine whether it supports an application on the chip. In Tag 9F06, it is 5-16 digits long.
Credit Card
The payment card industry is arguably the sector most affected by technology and the quickest to adapt new developments. With mobile devices, payment systems have changed a lot - we now prefer using our credit cards virtually rather than physically.
HSM & Security
Below are the properties and descriptions of the DES and AES keys used for encryption: DES (Data Encryption Standard) and AES (Advanced Encryption Standard) are both symmetric block ciphers. DES is a symmetric block cipher with a 56-bit key length...
Payment Systems
One of the most notable recent developments in card payments is that contactless limits are no longer fixed and can be managed dynamically per customer. Mastercard and Visa are taking different but complementary approaches, and ISO 8583 may need to evolve with them.
Payment Systems
Digitalization keeps changing the speed and shape of payments. AI-based payment agents pay on their own within user-defined limits and rules, completing transactions without the user initiating any action. This post explains how they work and what to watch for.
Security
A Qualified Security Assessor (QSA) is approved by the PCI Security Standards Council to audit merchants for PCI DSS compliance. The lists of QSA and ASV companies are published on the Council's website.
Merchant & POS
PIN Transaction Security (PTS) verifies that card data and PIN information are used for a payment transaction. It is a set of modular evaluation requirements managed by the PCI Security Standards Council for PIN-accepting terminals.
Credit Card
A credit card is a printed card, or a card number with no physical form, that allows the purchase of goods and services or cash withdrawal without using cash. So how are credit card limits set and managed? Setting a limit involves checking many parameters about the customer.
Clearing
DE03/Reimbursement Attribute carries the Reimbursement Value of a transaction. BKM uses this information as the basis for calculating interchange fees and charges between member banks.
ISO 8583
We covered the ISO 8583 basics in an earlier article. This post explains the ISO 8583 message structure in detail: every ISO 8583 message consists of three main parts - the MTI (Message Type Indicator), the Bitmap, and the Data Elements.
ISO 8583
F124 (Private Additional Data) contains additional information specific to the transaction, such as Card Update Failure Code and Status, cardholder name in money transfers, and keys in network management messages.
Online & Authorization
EMV stands for Europay, Mastercard and Visa. In 1994 these companies formed a working group to set chip-card standards, leading to the EMV standards used worldwide today.