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A Cash Deposit Machine (CDM) used for depositing cash directly into a bank account

ATM

What is a CDM (Cash Deposit Machine)?

CDM is short for Cash Deposit Machine. It refers to ATMs that allow you to deposit money directly into your account using a card. You can use CDM ATMs to carry out transactions on your account without visiting a branch.

Istanbulkart transit and payment card

Credit Card

Istanbulkart: Both Transit Card and Payment Card

When I think back to the Akbil I used when I first arrived in Istanbul, I think it's fair to say that Istanbulkart has undergone a very significant transformation. Users can now track activity, top up and view balances right from their phones.

ATM cash dispenser mechanism distributing banknotes

ATM

What Are the Cash Dispensing Algorithms Used in ATMs?

ATMs are important transaction points that let customers handle financial transactions without visiting a bank branch. 24/7 availability matters for customer satisfaction, so banks take steps to reduce both operational and cash costs.

ATM machine vulnerable to hacking and fraud

ATM

Can ATMs Be Hacked?

ATMs are among the channels banks use most to serve customers. Besides being one of the most important channels, because they physically dispense cash and give access to a customer's account, many fraud cases occur at ATMs.

Diagram illustrating the Greedy Algorithm used for ATM cash withdrawals

ATM

What is the Greedy Algorithm?

In payment systems, the Greedy Algorithm is used to give the customer the minimum number of banknotes when withdrawing cash from an ATM. The algorithm used varies from bank to bank, since ATM cash capacity and transaction volume differ. For example...

ATM cash deposit escrow compartment holding banknotes

ATM

What is Escrow?

Escrow acts as a kind of insurance policy in ATM transactions. A third party ensures that the terms of an agreement are met and that money (or other assets) changes hands only once those terms are fulfilled.

Illustration of the internal cash tower unit inside an ATM

Payment Systems

What is a tower?

In payment systems, the tower is the section inside an ATM where cash is physically stored. It contains cassettes holding different banknote denominations, a mix cassette for mismatched notes, and various security mechanisms protecting the cash.

Physical credit card compared with a virtual card on a mobile phone

Credit Card

Physical or Virtual Credit Card: Which Do You Prefer?

Digitalization is reshaping payment systems. Credit cards are moving from physical plastic to virtual cards, e-wallets and mobile payments. Will physical card use disappear completely? Here is a look at the trends, Generation Z and the remaining gaps.

Diagram illustrating how financing companies operate in Turkey

Payment System Institutions

What Are the Financing Companies Operating in Turkey?

These are credit institutions providing financing to individuals and companies for purchasing goods and services. Financing companies specialize mainly in vehicle loans, offering fast and flexible point-of-sale solutions distinct from banks.

Table listing ISO 8583 Field 25 (POS Condition Code) values

ISO 8583

ISO 8583 Field Descriptions (F25)

F25 - POINT OF SERVICE (POS) CONDITION CODE is the field that defines the condition under which a POS transaction was performed. Possible values include 00 Normal presentment, 01 Customer not present, 02 Unattended terminal, and more.