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Point-Of-Sale Processing And Terminals

Point-of-sale processing terms for terminals, gateways, processors, card acceptance, mobile POS, and manual card-imprinter evidence.

Point-of-sale processing and terminal terms describe how merchants capture payment credentials, send transactions for authorization, batch or settle sales, and reconcile card or wallet payments. This branch covers POS terminals, mPOS, payment gateways, payment processors, credit card processing, point of sale, and manual card imprinters.

Use these pages when a merchant statement, checkout record, terminal log, gateway response, processor report, or chargeback file depends on how the point-of-sale transaction was captured and routed.

What This Branch Covers

TermUse it for
Point of SaleThe checkout moment or place where a customer pays a merchant.
POS TerminalHardware or software endpoints that capture payment credentials and send transactions for authorization.
mPOSMobile point-of-sale setups using phones, tablets, or portable readers.
Payment GatewaySecure transmission of card or digital-payment data between merchant systems and processors.
Payment ProcessorTransaction handling between merchants, acquirers, card networks, and issuers.
Credit Card ProcessingAuthorization, clearing, settlement, and fee flow for card payments.
Knuckle-BusterManual card-imprinter evidence and legacy fallback processing.

Decision Lens

Start with the transaction record. Determine whether the evidence comes from the terminal, mobile reader, gateway, processor, acquirer, card network, issuer, or merchant system, then match the term to that control point.

Evaluation Checklist

  • Identify merchant, terminal or gateway, processor, acquirer, network, issuer, card-present status, and transaction date.
  • Separate authorization approval from capture, batch close, clearing, settlement, posting, and refund records.
  • Check whether the issue is hardware, software, gateway routing, processor settlement, or card-network rules.
  • Review fees, interchange, chargebacks, fraud indicators, terminal logs, and reconciliation reports together.
  • Use current processor and merchant agreement records when liability or settlement timing matters.

Common Mistakes

  • Calling every payment vendor a processor.
  • Treating gateway approval as settled funds.
  • Ignoring batch timing when reconciling deposits.
  • Comparing POS costs without separating processor fees, gateway fees, interchange, and chargebacks.

In this section

Choose a subsection first. Deeper term pages live inside each subsection, which keeps large topic hubs readable.

Credit Card Processing

Credit card processing covers authorization, clearing, settlement, and fee flows between merchants, acquirers, card networks, and issuers.

Knuckle-Buster

A knuckle-buster is a manual card imprinter formerly used to capture embossed card details when electronic authorization was unavailable.

mPOS

Mobile point of sale lets merchants accept card or wallet payments through a phone, tablet, or portable reader instead of a fixed terminal.

Payment Gateway

A payment gateway securely transmits card or digital-payment data between a merchant, processor, network, and issuer for authorization.

Payment Processor

A payment processor is a company that handles transactions between businesses and financial institutions, ensuring the smooth flow of payment information and funds.

Point of Sale

Point of Sale is a financial technology concept used in data, payments, banking access, or market infrastructure.

POS Terminal

A POS terminal is the hardware or software endpoint that captures payment credentials, sends transactions for authorization, and supports merchant checkout.

Revised on Sunday, June 21, 2026