Why it is called a point of interaction
POI stands for Point of Interaction. Payment and security documentation uses it for the place or device where a customer presents a card or other payment credential and the transaction begins. For a US merchant, that usually means the card-reading terminal at a staffed checkout, a PIN pad, or an unattended payment device. The term emphasizes the interaction point, while payment terminal names the hardware more plainly. POI can describe the payment-acceptance setup in technical specifications, EMV materials, or security documentation, so it is not always a one-for-one label for a single countertop unit.
You may see POI in terminal specifications, installation documents, or processor and security paperwork. It is not a separate line item on your processing statement, and the label itself does not change interchange, network fees, or processor markup. Compare actual equipment charges, such as a lease or device fee, rather than treating POI as a fee category. The rest of this page explains payment terminals, the primary term.
What a payment terminal is
A payment terminal is the physical device your customer uses to pay in person. It reads payment credentials from a chip card, a contactless card or phone, or a magnetic stripe, then sends an authorization request through your payment provider and the card network to the issuing bank. The bank returns an approval or decline through the same route.
The terminal and your point-of-sale (POS) system are different tools. The terminal handles the payment interaction. POS software can manage inventory, employee permissions, discounts, receipts, and sales reports. Some devices combine both functions.
A terminal is a hardware decision, not a processing-rate deal. Compare the total equipment cost and negotiate the markup separately.
How it works at checkout
For a chip payment, the customer inserts the card. For contactless, they tap a card or mobile wallet. Chip and tap transactions generate a unique transaction code. A mobile wallet passes a token instead of the card number. After approval, transactions are captured in a batch, and deposits arrive within one to two business days, depending on your processor’s schedule.
Countertop terminals suit a fixed checkout. Portable models connect by Wi-Fi or Bluetooth, while mobile readers pair with a phone or tablet. A compatible smartphone can also accept contactless payments without a separate reader. Match the device to how your staff take payments, rather than paying for features you will not use.
Illustrative hardware cost comparison
| Outright purchase | $300 total |
|---|---|
| Lease, $30 monthly for 24 months | $720 total |
| Difference | $420 |
Illustrative figures only. Compare actual equipment prices, fees, and lease terms before signing.
What it means for your costs
The terminal does not set your transaction rate. Your card costs have three layers: interchange paid to the issuing bank, network fees, and your processor’s markup. Only the markup is negotiable. Your terminal can affect how a transaction is entered, but the hardware purchase or lease is a separate cost from processing fees.
Compare the full hardware cost, not just the monthly payment. For example, a $30 monthly lease for 24 months totals $720, while a $300 outright purchase costs $300. Both figures are illustrative. A lease can cost more than the machine’s value and lock you into payments, so get the total term cost and cancellation terms in writing.
Security and the wrong setup
In the US, the EMV liability shift took effect for most in-person merchants in October 2015. When counterfeit fraud occurs, the party using the less secure technology bears the loss. A chip-capable terminal helps you accept chip payments instead of defaulting to a magnetic stripe. PCI DSS applies to every business that accepts cards, and merchants remain responsible for how devices and their network are handled.
An incompatible terminal and POS system can leave staff entering sales twice and create reconciliation work. Before buying or leasing, verify compatibility with your POS, the payment types you accept, and your internet connection. A point-to-point encryption certified terminal can reduce PCI scope, but it does not remove your responsibility to handle the device securely.
What you can actually change
- Get the full term cost. Add every monthly payment, setup charge, and required fee. Ask for the contract length, early-cancellation terms, and whether you own the device at the end.
- Confirm compatibility first. Have your POS provider confirm the exact terminal model supports your software, payment types, receipt needs, and connection setup before you commit.
- Separate hardware from rates. Review equipment charges separately from interchange, network fees, and processor markup. Focus rate negotiations on the markup, which is the negotiable layer.
Frequently asked questions
Does POI mean the same thing as POS?
POI means Point of Interaction and focuses on where the customer presents payment details. POS, or point of sale, often refers to the broader checkout system, which can include the terminal and sales software.
Will POI appear as a fee on my processing statement?
POI is a technical term, not a processing fee category. Look for actual equipment charges, such as a terminal lease or device fee, and compare those line items with your equipment agreement.
Where might my business see the term POI?
You may see POI in terminal specifications, installation documents, or payment security materials. It describes the payment interaction point, rather than a rate charged for processing a transaction.