Useful Information

Useful Information

  • Debit Cards/ Prepaid Cards/ Contactless Cards/ NFC

    Debit Cards
    Debit card is the card that accesses the cardholder’s bank account and debits the said account in the amount, equal to the amount of transaction made by the cardholder. It allows to use banking services, including the utilization of deposit accounts or special current accounts according to the definition given in Debit and Credit Cards Law, No. 5464.
    • Debit card is used as linked with the cardholder’s bank account.
    • PIN is needed not only for ATMs but also when using the card in a POS machine.
    • It is a more secure and easier method of payment than carrying cash.
    Prepaid Cards
    Prepaid Card is a payment card that can be used like a credit/debit card that is not linked with a bank account and it allows you only to spend the money that was loaded to the card.
    Advantages of Prepaid Cards
    • Transactions with Low Amounts
    • Security
    • Reloadable
    • Availability
    • No age or revenue limit
    • Capability to define utilization restrictions
    Types of Prepaid Cards
    • Gift Cards
    • Government Aids
    • Payroll Cards
    • Tax Refunds
    • Travel Cards
    • Cards specific to certain groups (new mothers, teens, etc.)
    • Event Cards (Combined ticket cards of sport clubs, olympics cards)
    Contactless Cards
    Cards that allow making the payment through a wireless interface that was defined on the POS in an environment, in which the card is physically available, are called “contactless card”. It is enough to show the card to the reader. So loss of time is prevented. Most important point is the capability to use contactless cards for small amounts of shopping such as public transportation, fast-food, car park fares, bridge passage fares, etc. Therefore all large cities are migrating to smart card applications throughout the world.
    NFC (Near Field Communication)
    What is NFC?
    Today there are many different applications being used by contactless technologies. NFC is offering an opportunity to use many fast, easy and secure new contactless services to mobile phone users in very short distances, usually shorter than 4 cm. NFC is the combination of mobile phone technology and contactless services.
    How are transactions being performed?
    Payments are made with NFC by approximating the mobile phone to contactless terminal. It is not different from contactless cards in terms of utilization for payment purposes.
    Card Details/Card Security:
    Card details are securely transmitted to mobile phone via Over the Air system. EMV security methods (used for Chip&PIN applications) are used for the transactions.
    User Benefits
    • Speed
    • Easiness (less need to carry cash and wallet)
    • Value Added Services (discount coupons, loyalty programs, ticket applications, smart posters, etc.)
    • Security (Immediate remote administration in accordance with EMV standards in case of lost/stolen cards)
    Merchant Benefits
    • Fast service and less queues in the cashier
    • Less need to keep cash in the cashier (fast transactions, reduced human error ratio)
  • 3D Secure
    3D Secure is a system, developed to increase the security of shopping transactions made online by credit and debit cards.
    “Secure online shopping” solutions, developed by Visa and MasterCard protect both cardholders and member merchants from frauds.
    Online shopping made at virtual merchants with Verified by Visa® and MasterCard® SecureCode™ logos are guaranteed by Visa and MasterCard.


    If your credit or debit card details are received by any person while you are shopping online, it is possible that they can make transactions with your credit or debit card without informing you. Visa and MasterCard have developed Verified by Visa® and MasterCard® SecureCode™”secure online shopping” solutions for you.
    Verified by Visa® and MasterCard® SecureCode™ are the services that allow you to make secure shopping by entering PIN for online shopping.
    What are Verified by Visa® and MasterCard® SecureCode™?
    Services provided by Visa are called as “Verified by Visa®” and services provided by MasterCard® are called as”MasterCard® SecureCode™”.
    Verified by Visa® and MasterCard® SecureCode™ are the services that allow you to make secure shopping by entering PIN for online shopping.
    Where I can shop?
    You can shop at all online shopping websites. If you have registered for the services, you can freely use your card during the shopping regardless of inclusion of the shopping website to Verified by Visa® and MasterCard® SecureCode™ services or not. As a summary, your shopping from websites that are included to Verified by Visa® and MasterCardVisa® SecureCode™ services will be more secured.
    The number of websites joining to these services is increasing day by day. You can see the lists of joined websites through the following links:
    What are needed for registration.
    Registration procedures of cardholders vary. Several security questions must be answered and following definitions must be made personally after the questions in order to complete registration
    – Personal Assurance Message (PAM)
    – PIN
    When you shop from any virtual store, your personal security message will be displayed during the payment. This message is known only by you and the bank that has issued your card. Display of this message means that you have securely connected to the website of the bank that has issued your card.
    Pay attention to not to determine a PIN that can be guessed easily when creating your PIN. For example, do not use your surname, address or date of birth.
    You must register for all cards that you own. If any of your card expires and you receive a replacement, you will not be required to register again.
    How can I register?
    You can click on the website of Visa® or MasterCard®, depending on the card that you own, and see whether your bank is included to the services or not in order to complete your registration.
    If your bank is included to these services, you can register through your bank’s website. The number of banks that have joined to Verified by Visa® and MasterCard® SecureCode™ services is increasing day by day.. You can learn from the Security section of your bank’s website whether your bank has joined to these services or not. Your bank might also has created its own brand for such services. You can receive information about the case by contacting with your bank.
    You can also register to these services while shopping online. You can complete your transaction by following the instructions to be displayed. If you would like to register in advance, you can use the links given above.


    Online transactions have been made more secure thanks to ‘secure online shopping’ solutions, named “Verified by Visa®” and”MasterCard® SecureCode™”, which are developed by Visa and MasterCard.
    What are ‘Verified by Visa®’ and ‘MasterCard®SecureCode™’?
    Services provided by Visa are called as “Verified by Visa®” and services provided by MasterCard® are called as “MasterCard® SecureCode™”.
    “Verified by Visa®” and “MasterCard® SecureCode™” authentication methods ensure security for online shopping, made by cards. Both methods have been developed by Visa and MasterCard and they are connected to 3D Secure protocol. You don’t need to select any of these methods in your website. Since same technical adjustments are required to be made in the system for both methods, merchants usually use both of them.
    How do ‘Verified by Visa’ and ‘MasterCard SecureCode’ operate?
    “Verified by Visa®” and “MasterCard® SecureCode™” operate exactly in the same manner. Cardholders become the members of these services through their banks and create the PINs that will help them to shop online. When they complete their shopping and enter their PINs for payment, they ensure that their PINs are verified through their banks. So it is proven that the transaction is performed by the actual cardholder. Authentication is completed only in a few seconds.
    What are the benefits?
    Decrease in the number of fraudulent transactions and guaranteed payment:
    Since “Verified by Visa” and “MasterCard SecureCode” shopping solutions, which are similar to chip&PIN method, are secure, the number of fraudulent transactions will decrease and it will be guaranteed that your payments are made.
    Decrease in costs:
    Time will be saved as a result of a decrease in the number of chargebacks and their costs will be reduced too.
    Increase in sales:
    According to a survey, conducted by Visa Europe in Germany, Spain, and UK, the security provided by Verified by Visa encourages 84% of the persons, who do not shop online, to make shopping and encourages 71% of the persons, who do not shop online frequently, to make more shopping.
    How do customers use these services?
    “Verified by Visa®” and”MasterCard® SecureCode™” shopping solutions, which are similar to chip&PIN method, are easily used by the customers.
    If you are a merchant that is using these shopping methods, cardholders will be asked to enter their PIN when completing their shopping. Since the PIN is only known by the cardholder as it is in chip&PIN, online shopping made through 3D Secure is performed in a secure manner. If the cardholder that wants to make online shopping has not registered yet, he/she can easily register through your website before completing the shopping.
    If a cardholder is not registered, which procedure will be applied?
    If the cardholder is not registered to these services, the transaction is completed without 3D Secure verification.
    If the cardholder is not registered but these services are offered by his/her bank, the cardholder will be asked to register through “Activation During Shopping” procedure. A new security window, which includes the questions that the cardholder must reply, is opened. Cardholder can register to the service through this window and complete the payment.
    If cardholders refuse to register, which procedure will be applied?
    Opportunities will be offered to the cardholders that have not registered yet until the banks require cardholders to be registered.
    A limitation on the number of refusals by cardholders can be applied until registration becomes mandatory.
    How are these services provided?
    You can receive information about the practices at
  • Law on Debit Cards and Credit Cards, No. 5464
    Arrangements for Utilization of Cash Advance and Limit Increases According to Provisions of Regulations on Debit Cards and Credit Cards, Issued by BRSA on 17 December 2010
    According to Article 22 of the Regulation on Debit Cards and Credit Cards, which was put into force on June 17, 2011, limits of credit cards, whose period debts were not paid by more than 50% for 3 times in any calendar year, cannot be increased until the entire period debt is paid and such cards are not allowed to be used for withdrawing cash.
    This provision can be applied to all credit cards of a cardholder in case he/she has more than one credit card in the same bank.
    If the entire debt of the last account statement is paid, credit cards will be opened for cash withdrawal and limit increases again.
    These credit cards will continue to be used for purchasing goods and services until the entire period debt is paid and the practices applicable to the purchasing of goods and services are not changed.
    Cardholders must pay attention to the issues described above in order not to have any problem in their requests to utilize cash and increase their limits.
  • Glossary

    Credit Voucher
    The document that is issued by member merchant and signed by authorized representatives of the said member merchant in case a good or service, which was purchased by card, is returned or the transaction is canceled.
    The machine that allows you to perform banking transactions anytime and anywhere. You can withdraw cash from your demand deposit accounts, deposit money to these accounts or transfer money from one account to another by using your debit or ATM card at ATMs. You can also perform cash advance transactions at ATMs by using your credit card. If you are using the ATM of another bank when performing these transactions, you might be required to pay a certain fee for the transactions you performed.
    Debit Card
    Debit card is directly linked to the cardholder’s deposit account. This card is issued to the bank’s customers in order to purchase goods and services, withdraw cash and perform other available banking services through Automatic Teller Machines (ATM) and Point-of-Sale Terminals (POS) by accessing the cardholder’s deposit account via a PIN.
    Balance Transfer
    The transaction of transferring an unpaid credit card debt from a bank to another.
    Interest Rates
    Monthly interest rates applied to outstanding balance. Interests are determined as a certain percentage of outstanding balance. Financial fees are the amounts paid to use the facilitated credits (borrowed money).
    Account Statement
    The document that is regularly sent to your address every month, which contains the amounts that you spent between your previous and last cutoff dates as well as your limits, bonuses, debts and payments. Expenditure site.
    Card Issuing Organization
    These are the banks and other organizations that issue cards according to the licenses they have.
    The person, to which a card is issued according to the contract that he/she has executed with the bank or authorized card issuing organization.
    Card System Organization
    These are the organizations that have established credit or debit card system and does authorize other organizations to execute member merchant contracts for issuing or accepting cards in accordance with this system.
    Credit is an agreement between an organization that lends money (bank, merchant or credit card company) and the person that borrows money. This credit can be provided either by hand or by applying a certain limit for using a certain amount of cash through the bank account or credit card. All rules pertaining to reimbursement of such amounts, including interests, are determined in advance and stated in the contract to be executed between the card holder and card issuing organization.
    Credit Card
    Credit card is a payment method. Credit facilities are auxiliary functions that were added in order to be used in case of necessity. There are various alternative credit types, offered by the banks at interest rates, ranging between 1% and 2.5%. Credit cards are offering all cardholders to pay their debts within maximum 1 month without paying any interest. They also make a significant contribution to family budgets thanks to various prizes they offer during shopping, such as cash bonuses, etc. Until today, credit card users have received prizes that can be spent as cash, amounting to averagely 2% of total revenue, by the banks and member merchants.
    Credit Limit
    This is the maximum amount that you can be credited by using your card. Your credit cards use the same joint limit.
    Credit History
    This is the record of your card payments that you made before. It is used to show your tendency to make your future payments on time.
    Overdraft Account
    The limit allocated to you even though you don’t have money in your demand deposit account, to which your debit card is linked. If you use this limit, you might be required to pay fee or interest.
    Cash Advance
    You can withdraw cash by using your credit card at an ATM or in a bank branch. The amount of cash that you have withdrawn is deducted from your credit limit. The bank receives a certain commission fee when you withdraw cash. Furthermore the interest rate applied for cash advance is higher than the interest rate applied for shopping and usually this interest is accrued as of the day you withdrew cash (Cash advance is different than withdrawing cash by your ATM card).
    Cash Payment Certificate
    This is the document, issued for cash payments made to and signed by the cardholder.
    NFC (Near Field Communications) is a technology that allows secure and wireless transfer of information in close distance (approximately 4 cm) Utilization of NFC technology in mobile phones allows to benefit from several contactless services, such as payment, receiving information from smart posters, data transfer between electronic
    devices, ticketing, etc., by using mobile phone. Your PIN is a secret code that you have selected for your card in order to perform banking transactions and access to your accounts through ATMs as well as to shop with your card. Don’t share your PIN with anyone.
    POS Device
    The electronic device, used by merchants for accepting credit/debit cards. This device electronically reads the information stored in the card’s chip or magnetic band on the card’s back side and receives authorization electronically to complete the transaction.
    This is the transaction performed by phone and/or electronically to find whether the card’s limit is suitable or not and the card has any lost/stolen card record or not. The merchant calls credit cards provision service of the bank for transactions made via imprinter and asks for authorization of the transaction by providing card number. The provision is given online when the card is slipped through POS and ATM device.
    Sales Document
    The document that is issued by member merchant for the transactions made by credit card, does show the debt arising out of the transactions of cardholder and is signed by the cardholder.
    Last Payment Period
    This is usually a period of 10 days, during which an interest is not applied to the expenditures you made. For example, if the cutoff date of your credit card is May 1 and you have paid all of your card debt until May 11, the last payment date, then no interest is applied.
    Member Merchant
    The natural person or legal entity that has accepted to sell goods and services to the holder of debit or credit card according to the contract that it has executed.
    Member Merchant Contract
    The contract executed between merchants and banks and other organizations in order for acceptance of the card.
    TSM has occurred to increase the productivity in business relationships between different parties in NFC ecosystem. TSM is the organization that securely distributes and manages NFC service to users. TSM grants access to service providers through a single point. It also ensures that service provider downloads and manages NFC application remotely to the customer’s mobile phone.
    Annual Interest Rate
    The annual interest rate applied to outstanding balance.
    Annual Fees
    Banks and organizations that issued your card may request annual fees from the cardholders in order to compensate the expenses they made for your card.
  • Abbreviations
    PCI: Payment Card Industry
    GSMA: GSM Association
    TTP: Trusted Third Party
    TSM: Trusted Service Manager
    SD: Secure Domain
    SE: Secure Element
    GP: Global Platform
    UI: User Interface
    ICE: Iterative Countermeasure Evaluation
    UICC: Universal Integrated Circuit Card
    CAP: Chip Authentication Programme (Mastercard)
    DPA: Dynamic Passcode Authentication (VISA)
    OTP: One Time Passcode
    ISD: Issuer Security Domain
    TSD: Trusted Security Domain
    APSD: Application Security Domain
    PPSE: Proximity Payment System Environment
    SWP: Single Wire Protocol
    USIM: Universal Subscriber Identity Module
    PAN: Primary Account Number