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Payment processor

Payment processor 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 processor rather than just read about it. In short: A payment processor is a data and communications center ("switch") that moves payment transactional data and messaging between a card issuing bank, a merchant, and a card acquiring bank (USA model) to enable financial transactions between purchasers and sellers. It processes payment information for various channels such as credit cards and debit cards or bank accounts.

Key takeaways

  • Payment processor 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 processor to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Payment processor from memory before moving on to harder problems.

Reference excerpt

A payment processor is a data and communications center ("switch") that moves payment transactional data and messaging between a card issuing bank, a merchant, and a card acquiring bank (USA model) to enable financial transactions between purchasers and sellers. It processes payment information for various channels such as credit cards and debit cards or bank accounts. They are usually broken down into two types: front-end (for card authorization) and back-end (for settlements). Front-end processors have connections to various card associations and supply authorization and settlement services to the merchant banks' merchants. Back-end processors accept settlements from front-end processors and, via the Federal Reserve Bank for example, move the money from the issuing bank to the merchant bank. In an operation that usually takes a few seconds, the payment processor will both check the details received by forwarding them to the respective card's issuing bank or card association for verification, and also carry out a series of anti-fraud measures against the transaction. Additional parameters, including the card's country of issue and its previous payment history, are also used to gauge the probability of the transaction being approved. Once the payment processor has received confirmation that the credit card details have been verified, the information is relayed back via the payment gateway to the merchant, who will then complete the payment transaction. If verification is denied by the card association, the payment processor will relay the information to the merchant, who will then decline the transaction.

Evolution of payment technology After centuries of using metal coins, paper currency made its first appearance in China during the Tang dynasty (around the 10th century AD) and was later introduced to the West in the 17th century. Also in the 17th century, people began to use checks as a payment method, which grew in popularity from the 1800s to the early 1900s. To help streamline and centralize the multiple types of currency, the U.S. Congress passed the Federal Reserve Act in 1913. The first payment card was created in 1950 by Ralph Schneider and Frank McNamara to allow members to use charge cards at their Diners’ Club, and consumers were required to pay their bill in full each month. In 1959, American Express created the first credit card that allowed users to carry a balance from month to month. The ATM emerged in the 1960s and 1970s as part of the growing movement toward “self-service” technology. ATMs provided the first technology-enabled banking option that allowed consumers to conveniently deposit and withdraw cash, without being restricted to a particular bank location or business hours. In 1972, the first Automated Clearinghouse (ACH) association was formed in California in response to bank industry concerns that widespread check usage would outpace the technology needed to process them. ACH became the primary method of electronic funds transfer (EFT) for agencies, businesses, and individuals to pay or collect money online, and is still commonly used today. Over the following decades, the evolution of payment technology accelerated. The first digital currency is attributed to an algorithm developed by David Chaum in 1983. Although modern folklore suggests the possibility of early internet purchases – specifically, online marijuana sales between MIT and Stanford students in 1971 and 1972, a 1974 pizza order by Donald Sherman, and a 1984 grocery purchase by Jane Snowball – the first legitimately recognized online purchase was most likely a CD sold by Dan Kohn in 1994 using a website he developed called NetMarket. The first online payment processing company was founded in 1998, first under the name Confinity, which was later changed to X.com, changing again to its current name, PayPal, in 2001. The market continued to expand over the following two decades, branching out into a full payment processing ecosystem that includes card companies, digital wallets and apps, cryptocurrencies, payments software platforms and gateways, eCommerce partnerships, and peer-to-peer payments. Other technologies that are vital to the payment ecosystem are data security systems and processes, automated functionality, and customer engagement tools. The future of the payment processing industry is being driven by an increase in vertical-specific processors, the accelerated adoption of contactless payment methods (in response to COVID-19-related limitations on contact and in-person interactions), and the trend toward customer choice and autonomy, particularly in western cultures.

Modern implementations Due to the many regulatory requirements levied on businesses, the modern payment processor is usually partnered with merchants through a concept known as software-as-a-service (SaaS). SaaS payment processors offer a single, regulatory-compliant electronic portal that enables a merchant to scan checks (often called remote deposit capture or RDC), process single and recurring credit card payments (without the merchant storing the card data at the merchant site), process single and recurring ACH and cash transactions, process remittances and Web payments. These cloud-based features occur regardless of origination through the payment processor's integrated receivables management platform. This results in cost reductions, accelerated time-to-market, and improved transaction processing quality.

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Payment processor

Start with the simplest possible case. Write down what Payment processor 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 processor 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 processor 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 processor

In research
Payment processor 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 processor 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 processor is common in secondary-school and first-year university syllabi. It links to neighbouring topics E-commerce, Electronics industry, Payments, so understanding it makes those chapters shorter.
In everyday life
Look for Payment processor 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.

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How to study Payment processor in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Payment processor 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 processor out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Payment processor in simple terms?

A payment processor is a data and communications center ("switch") that moves payment transactional data and messaging between a card issuing bank, a merchant, and a card acquiring bank (USA model) to enable financial transactions between purchasers and sellers. It processes payment information for…

Why does Payment processor 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 processor?

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 processor.

Tags

  • E-commerce
  • Electronics industry
  • Payments

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