Search
272 articles found
Merchant & POS
A Card Recovery Bulletin is a list of problem cards (lost, stolen, expired, over-limit, counterfeit or otherwise flagged) published by card schemes such as Visa or MasterCard. It shows whether a card number is listed on the date of purchase.
Credit Card
The effect of credit cards on inflation has been debated for years. Because I am asked about it so often, I ran a poll on arifunal.com to gather readers' views. This post weighs the positive and negative effects and compares the poll with the research findings.
HSM & Security
ZPK, also known as the PIN Protection Key, is a data encryption key that is distributed automatically and used to encrypt PINs. It is also referred to as the 'Working Key'. This key allows PIN information to be carried securely across the network.
Security
“Software-based Mobile Payment Security Requirements” is a document published by EMVCo in April 2020 to guide payment application developers in building secure payment applications. This post summarizes its purpose and who it concerns.
Payment Institutions & E-Money
Online shopping keeps growing, and e-commerce sites must choose between working with a bank or a payment institution. This article explains why a single application and integration with a payment institution can be the better route.
Payment Systems
Current information: this post describes the limit at the time of publication. The BRSA raised the contactless card transaction limit to 750 TL, effective 1 July. Above the limit, contactless payments need a PIN. The post also traces the limit's history.
Laws & Regulations
No. There is an exemption for technical service providers that offer IT support for the provision of payment services. However, they have responsibilities under the Communiqué on outsourcing and information security.
Credit Card
The Effective Date is the information showing the date until which a card can be actively used. It can also be called the expiration date. It is a mandatory field printed on the card and used in transactions, set by banks for card security.
ISO 8583
F35 TRACK-2 DATA: The values printed to the card's Track 2 data in ISO 7813 format, including field separators and start/end sentinels, but excluding LRC (Longitudinal Redundancy Check) characters. It is 37 characters long.
Payment Systems
The domestic authorization flow for below-CVM-limit online contactless transactions has changed. Issuers can now ask the cardholder for a PIN or request card insertion instead of simply approving or declining. This post explains the CVM list and the new DE48 PDS22 and DE39 = 65 message flows.
Payment Institutions & E-Money
The duties of the Payment Systems and Financial Technologies Department, set up within the CBRT Head Office, have been defined, along with the directorates it consists of.
Security
The number of companies offering cloud computing and storage has grown sharply in recent years. AWS, founded in 2006, is the world's largest cloud computing and storage provider, ahead of Google Cloud, Microsoft Azure and IBM.