Learn about Square's hardware solutions, APIs, and SDKs that support in-person payment processing.
Take Payments

In-Person Payment Solutions

Use Square's in-person payment solutions to process payments and build integrations with the seller's POS application. Depending on the seller's use case, you can integrate your in-person payment solutions with Square Terminal, Square Reader, or Square Stand. Along with Square hardware, use the Terminal API, Reader SDK, or Point of Sale API to enable your POS application to process and manage payments and perform other buyer-facing actions.

Before developing your integration, review Square's in-person payment solutions, hardware offerings, and API and SDK integrations.

Take payments with the Terminal API and Square Terminal

The Terminal API lets your POS application collect payments using Square Terminal. Because the Terminal API is a cloud-based API, you can access it from any third-party POS application connected to the Internet. The Terminal API also supports device management, device customization, and buyer-facing features such as saving a card on file and signature capture.

Take payments with the Reader SDK and Square Reader or Square Stand

The Reader SDK provides an embedded Square checkout flow and accepts in-person payments in a custom Android or iOS application using a Square Reader (Contactless Chip or Magstripe) or Square Stand. This simplifies chip and NFC payments, addresses EMV certification requirements, and makes PCI compliance easy. The SDK supports authorization, payment processing, and Reader management.

If Reader SDK is not available in your region, use the Point of Sale API to switch seamlessly to the Square Point of Sale application and collect payment with Square Readers. The Point of Sale API is available for native and web applications on iOS and Android.

After reviewing an in-person payment integration, compare it against each solution's key features that best suit your seller's business.

Terminal APIReader SDK and Point of Sale API
HardwareSquare TerminalSquare Reader
Square Stand
Device supportNo device requirementsRequires Android, iOS, or a compatible mobile device. For more information, see Device compatibility.
Seller use caseCountertopMobile sellers
App integrationSeller's custom POS application with the Terminal APISeller's mobile POS application integrated with the Reader SDK or Point of Sale API.
Card payment methodTap/Dip/SwipeTap/Dip
Swipe with previous versions of Square Stand or with the audio jack/lightning port for Square Reader Magstripe (R4/R41).
Region availabilityAustralia, Canada, France, Ireland, Japan, Spain, UK, and USReader SDK: US only
Point of Sale API: outside of the US
Integration with other Square APIs and SDKsDevices API
Payments API
Transactions API
Payment type supportApple Pay, Google Pay, and credit cardApple Pay, Google Pay, and credit card
Sandbox supportUses Sandbox test device IDsNot supported. Testing must be done in production using the CASH tender type.

  • Guide about taking payments

  • Guide about how to connect the Square Terminal to the POS application using the Terminal API

If you need more assistance, contact Developer Support or ask for help in the Developer Forums.