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Debit Card
A debit-featured card issued to a sole proprietorship, a commercial company, or a foundation/association is called a commercial debit card. Operationally, it is no different from a personal debit (ATM) card. It has its own limit, status, and user.
ATM
Everyone has probably felt the fear of money getting stuck in an ATM while making a deposit. What causes this to happen? It is not a very common occurrence, but it can happen if you do not pay attention to a few important points.
Merchant & POS
An operation that allows a credit card's limit to be blocked for a period, due to the nature of the product or service sold. Preferred mainly by companies in travel, tourism, and car rental.
Merchant & POS
Virtual or electronic authorization devices connected to a bank, used by merchants to accept card payments. The term comes from the English phrase Point of Sale. Covers POS types by communication method, their advantages, who can use one, and the transactions a POS can perform.
Credit Card
As credit cards become more and more a part of our lives, we now make almost all our purchases without cash. We inserted our card into the merchant's POS. We made a 100 TRY sale transaction. We received a receipt confirming it was successful.
Credit Card
In credit card transactions made through a POS, receiving approval alone is not enough for the transaction to post to the card's statement period; settlement must also take place. The settlement period, known as the open-authorization waiting time, varies by transaction type.
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...
Merchant & POS
The Combined Warning List (BUL) lists card numbers the issuer wants blocked (lost, stolen, counterfeit, etc.), which acquiring merchants check within certain limits, at their own risk, when online authorization cannot be obtained.
Credit Card
When the card-issuing bank and the POS bank are different, first obtaining authorization and then running the clearing process to finalize the transaction is called Dual Messaging. So why is a dual message structure needed?
HCE
An international standard that defines proximity cards used in Near Field Communication (NFC) and the protocols used to communicate with them. It has 4 parts; Part 4 covers NFC and HCE operations.
Agentic Commerce
The next customer on the internet may not be human. If AI agents become part of purchasing decisions, the rules of e-commerce, marketing, and payment systems could change.
Closed-Loop Payments
Is Alipay a payment system, or a digital economy? In the previous post we discussed how Starbucks shows that payment systems can evolve into a different structure. At first the goal was to make payment easier for the customer. As the system grew, loyalty programs...