ArticleslgStudy

science

Payment terminal

Payment terminal is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Payment terminal rather than just read about it. In short: A payment terminal, also known as a point of sale (POS) terminal, card machine, credit card machine, card reader, PIN pad, EFTPOS terminal (or by the older term as PDQ terminal which stands for "Process Data Quickly"), is a device which interfaces with payment cards to make electronic funds transfers. The terminal typically consists of a secure keypad (called a PINpad) for entering PIN, a screen, a means of capturin…

Payment terminal — main illustration
Payment terminal — illustration

Key takeaways

  • Payment terminal belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Payment terminal to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Payment terminal from memory before moving on to harder problems.

Reference excerpt

A payment terminal, also known as a point of sale (POS) terminal, card machine, credit card machine, card reader, PIN pad, EFTPOS terminal (or by the older term as PDQ terminal which stands for "Process Data Quickly"), is a device which interfaces with payment cards to make electronic funds transfers. The terminal typically consists of a secure keypad (called a PINpad) for entering PIN, a screen, a means of capturing information from payments cards and a network connection to access the payment network for authorization. A payment terminal allows a merchant to capture required credit and debit card information and to transmit this data to the merchant services provider or bank for authorization and finally, to transfer funds to the merchant. The terminal allows the merchant or their client to swipe, insert or hold a card near the device to capture the information. Card machines are often connected to point of sale systems so that payment amounts and confirmation of payment can be transferred automatically to the merchant's retail management system. Terminals can also be used in stand alone mode, where the merchant keys the amount into the terminal before the customer present their card and personal identification number (PIN). The majority of card terminals today transmit data over cellular network connections and Wi-Fi. Legacy terminals communicate over standard telephone line or Ethernet connections. Some also have the ability to cache transactional data to be transmitted to the payment processor when a connection becomes available; the major drawback to this is that immediate authorization is not available at the time the card was processed, which can subsequently result in failed payments. Wireless terminals transmit card data using Bluetooth, Wi-Fi, cellular, or even satellite networks in remote areas and onboard airplanes. Prior to the development of payment terminals, merchants would capture card information manually using ZipZap machines. The development of payment terminals was led by the advantage of efficiency by decreased transaction processing times and immediate authorisation of payments. In terms of security, terminals provide end to end card data encryption and auditing functions. Nevertheless, there have been some cases of POS pin pad malware. There have also been incidence of skimming at card terminals and this led to the move away from using the magnetic strip to instead capturing information using EMV standards.

History

Prior to the development of payment terminals, merchants would use manual imprinters (also known as ZipZap machines) to capture the information from the embossed information on a credit card onto a paper slip with carbon-paper copies. These paper slips had to be taken to the bank for processing. This was a cumbersome and time-consuming process. Point of sale terminals emerged in 1979, when Visa introduced a bulky electronic data capturing terminal which was the first payment terminal. In the same year magnetic stripes were added to credit cards for the first time. This allowed card information to be captured electronically and led to the development of payment terminals.

One of the first companies to produce dedicated payment terminals was Verifone. It started in 1981 in Hawaii as a small electronics company. In 1983 they introduced the ZON terminal series, which would become the standard for modern payment terminals.

Hungarian-born George Wallner in Sydney, Australia, founded rival Hypercom in 1978 and in 1982 started producing dedicated payment terminals. It went on to dominate the Oceania region. The company signed a deal with American Express to provide its terminals to them in the US. To consolidate the deal, Hypercom moved its head office from Australia to Arizona in the US. It then faced head-to-head competition with Verifone on its home market. Over a decade later in 1994, Lipman Electronic Engineering was established in Israel. Lipman manufactured the Nurit line of processing terminals. Because of Verifone's already firm place in the payment processing industry when Lipman was established, Lipman targeted an untapped niche in the processing industry. While, Lipman held about a 10% share in wired credit card terminals, they were the undisputed leader, with more than 95% share in wireless processing terminals in the late 1990s. Verifone would later acquire both of these major rivals, acquiring Lipman in 2006 and the payment part of the Hypercom business including its brand in 2011. In 1980, Jean-Jacques Poutrel and Michel Malhouitre established Ingenico in France and developed their first payment terminal in 1984. Its Barcelona-based R&D unit would lead the development of payment terminals for the next decade. Ingenico, through a number of acquisitions, would dominate the European market for payment terminals for a number of years. They acquired French based Bull and UK based De La Rue payment terminal activity as well as German Epos in 2001. Initially, information was captured from the magnetic strip on the back of the card, by swiping the card through the terminal. In the late 1990s, this started to be replaced by smart cards where an electronic chip was embedded in the card. This was done for added security and required the card to be inserted into the credit card terminal. In the late 1990s and early 2000s contactless payment systems were introduced and the payment terminals were updated to include the ability to read these cards using near field communication (NFC) technology.

Typical features

Key entry (for customer not present mail and telephone order) Tips/gratuities Refunds and adjustments Settlement (including automatic) Pre-authorisation Payments using near field communication enabled devices Remote initialisation and software update Point of sale (POS) integration Multi-merchant capabilities Pen or PIN authorization by the customer Surcharge function Secure password operation Additional PIN pad attachments Like automated teller machines, many payment terminals are also equipped with raised tactile buttons and an earphone jack which allow the blind to audibly finish the payment process.

… excerpt ends here. Continue reading the full article.

Illustrations

Payment terminal: PAX Technology S90 payment terminal with a Visa card inserted.
PAX Technology S90 payment terminal with a Visa card inserted.
Payment terminal: Castles Technology payment terminal with a Mastercard card inserted.
Castles Technology payment terminal with a Mastercard card inserted.
Payment terminal: A fixed install Hypercom card terminal from 2006
A fixed install Hypercom card terminal from 2006
Payment terminal: Ingenico Move/2500 payment terminal with a QRIS QR code payment
Ingenico Move/2500 payment terminal with a QRIS QR code payment
Payment terminal: Payment screen on a Ingenico Desk 5000 terminal at a self-service top-up kiosk from 2025
Payment screen on a Ingenico Desk 5000 terminal at a self-service top-up kiosk from 2025

Worked examples

Example 1 — a first encounter with Payment terminal

Start with the simplest possible case. Write down what Payment terminal claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Payment terminal before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Payment terminal ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Payment terminal

In research
Payment terminal appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Payment terminal in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Payment terminal is common in secondary-school and first-year university syllabi. It links to neighbouring topics Banking technology, Credit card terminology, Japanese inventions, so understanding it makes those chapters shorter.
In everyday life
Look for Payment terminal outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Payment terminal” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Payment terminal in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Payment terminal means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Payment terminal out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Payment terminal in simple terms?

A payment terminal, also known as a point of sale (POS) terminal, card machine, credit card machine, card reader, PIN pad, EFTPOS terminal (or by the older term as PDQ terminal which stands for "Process Data Quickly"), is a device which interfaces with payment cards to make electronic funds transfe…

Why does Payment terminal matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Payment terminal?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Payment terminal.

Tags

  • Banking technology
  • Credit card terminology
  • Japanese inventions
  • Merchant services
  • Payment systems
  • Telecommunications-related introductions in 1979

Keep exploring