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Payment card being checked against a card recovery bulletin of problem cards

Merchant & POS

What Is a Card Recovery Bulletin (Card Protection Bulletin)?

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.

Contactless payment being made with a chip debit card at a POS terminal

Debit Card

Can a debit card (ATM card) be used for contactless transactions?

A contactless transaction is a fast, secure payment made between a chip card and a POS device without direct contact, without the card's chip or magnetic data being read through the card reader. Can this be done with a debit card (ATM card)?

Contactless reader device attached to a POS terminal

Merchant & POS

What Is a Contactless Reader?

These are devices connected to a POS terminal that allow fast payments, up to a certain limit, using contactless credit cards or prepaid cards by tapping them on the contactless reader instead of the POS's card reader. Can every POS have a contactless reader attached?

Diagram illustrating the PSD (Payment Services Directive) regulatory framework

Merchant & POS

What is PSD (Payment Services Directive)?

PSD stands for Payment Services Directive, known as the Payment Services Law. It took effect in EU countries in 2009, and in 2015 new revisions were announced as PSD1, aiming to build an efficient, fast, secure, and competitive payment market.

Customer making a contactless payment by tapping a card on a POS terminal

Contactless

What Is a Contactless Transaction?

A contactless transaction is a fast and secure payment made between a credit card and a POS terminal without direct contact, without reading the card's chip or magnetic stripe. Both the card and POS terminal must support contactless transactions.

Illustration representing the Card Protection Plan (CPP)

Security

What is CPP (Card Protection Plan)?

Credit cards are one of the most important payment instruments in daily life. As technology advances and mobile payments and ATMs handle nearly all transactions, credit card fraud is also diversifying and increasing.

Diagram showing how a Message Encryption Key (MEK) is used to encrypt and transmit a message

Merchant & POS

What Is Message Encryption Key (MEK)?

MEK stands for Message Encryption Key, a randomly generated or static key used to encrypt message content and ensure its secure transmission between parties.

Contactless payment card being tapped on a POS terminal

Merchant & POS

Can a contact/contactless transaction be processed offline?

An offline transaction is one in which the card and POS terminal approve the transaction based on their own parameters, without contacting their banks. Whether contact or contactless, the device decides whether the transaction is processed offline.

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.

Virtual POS online card payment illustration

Merchant & POS

What Are the Benefits of a Virtual POS for Merchants?

A virtual POS is a payment platform that enables online payments by credit or debit card. Banks also give merchants interfaces for mail order, pre-authorization, cancellations and refunds.