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"card processing"

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Illustration of a card present transaction being processed at a POS terminal

Security

What is a CP (Card Present) Transaction?

A CP transaction refers to a card transaction in which the card and cardholder are physically present at the location. Card Present transactions occur when the card's magnetic stripe or chip data is read by a POS terminal or ATM, or via contactless.

Illustration representing legal and administrative collection processes for unpaid credit card debt

Credit Card

What Are Legal Collection and Administrative Collection?

For people who have trouble paying credit card debt, who do not pay, or who pay late, the concepts of legal collection and administrative collection are not unfamiliar. So, what are legal collection and administrative collection? After a statement is issued on the card,…

Diagram showing the structure of the Card Verification Results (CVR) data element

Credit Card

CVR (Card Verification Results)

CVR (Card Verification Results) refers to the results of checks performed on the card. In short, it can be described as keeping the card's transaction log. BYTE 1 Bit 8-7: 00 = The second GENERATE AC command returned an AAC cryptogram (decline)...

PIN try counter on chip cards

Credit Card

What Is the PIN Try Count?

The PIN Try Count is the maximum number of failed offline PIN verifications that can be made with the card. Banks usually keep both the consecutive wrong PIN count and the maximum wrong PIN count.

Credit card being inserted into a merchant POS terminal

Credit Card

What Is the Transaction Life Cycle in the Card World?

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.

Contactless floor limit, CVM limit and transaction limit example

Merchant & POS

Can a Contactless Transaction Be Online?

Yes. Whether a contactless transaction goes online depends on the limits on the card and the POS: the contactless floor limit, the CVM limit and the contactless transaction limit. A worked example shows how.

Diagram illustrating the TLV (Tag-Length-Value) data structure

Online & Authorization

What is TLV (Tag-Length-Value)?

TLV is a data storage method used to speed up the parsing of data. For example, reading data from a card's chip at a POS and carrying it through authorization uses the TLV structure.

POS terminal used for card payment transactions

Merchant & POS

What is On-Us Leakage?

On-Us Leakage is a term used in the world of payment systems. On-us means the card-issuing bank and the POS-acquiring bank are the same. So what does on-us leakage mean in this context?