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HSM & Security
A Trusted Execution Environment (TEE) is an environment where executed code and accessed data are isolated and protected in terms of confidentiality (no one has access to the data) and integrity (no one can alter the code or its behavior). We may not realize it, but many…
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.
Debit Card
The main difference between embossed debit cards and standard debit cards is that the card number, cardholder name, and expiration date are printed in raised, embossed format rather than flat.
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.
Credit Card
While the use of physical cards and POS terminals is gradually declining, positive developments continue, such as the world's first wooden card, TreeCard, backed by the search engine Ecosia and aimed at reforesting the world.
Online & Authorization
A contactless transaction is a fast, secure payment made without direct contact between the card and the POS terminal (without reading the chip or magnetic stripe). Can every card be used for contactless payments? For a transaction to be contactless…
Closed-Loop Payments
Is Starbucks really selling coffee, or building an ecosystem? Prepaid balances, a loyalty program and customer data turn a coffee chain's payments into a closed-loop economy, a very different model from Istanbulkart.
Credit Card
After Apple Card, announced last March to great fanfare, Huawei said it would issue a card too. Google has now joined the race among tech companies by announcing a new card of its own.
Payment System Institutions
BKM (Interbank Card Center) was founded in 1990 to clear and reconcile credit and debit card payments. This post covers its public collection solutions: contactless transport in Konya, SGK premium payments and e-Government gateway fees.
Credit Card
When payment systems come to mind, credit cards are usually the first thing people think of. Credit cards are produced according to specific standards, both in visual design and during printing. These standards belong to the ISO/IEC 781X family.
Merchant & POS
The digital form of Point of Sale (POS) systems is called Digital POS. There is also a software-only subtype called Virtual POS. After Mobile POS (mPOS) and Virtual POS usage became widespread, the term digital POS came to refer to these two products.
ATM
The first device that can truly be called an ATM was produced by De La Rue for Barclays Bank and put into service in Enfield, London, on 27 June 1967. The ATM came to Türkiye in 1982.