Welcome to the Developer Portal

PayButton Integration
- Integration
- Summary Screen
- On-Reader Tipping
- Pre-Auth and Capture
- Refunds
- Custom Receipts
- Testing
- Going Live
- Release Notes

Windows Integration
- Configure, Run, and Test PayServer
- .NET POS Integration via PayClient
  - Refunds
  - Custom Receipts
  - Preformatted Receipts
  - Offline Transactions via Deferred Authorizations
- POS Integration via PayProtocol
  - Usage and Message Flows
  - Message Specification
  - Refunds
  - Custom Receipts
  - Preformatted Receipts
  - Offline Transactions via Deferred Authorizations
- Testing
- Going Live
- Release Notes

Backend Integration
- API Endpoints and Authentication
- WebHooks
- Query Transactions
- Refunds
- Custom Receipts
- Going Live
- API Documentation

Card Readers
- Protecting Cardholder Data
- Developer Kits
- Test Cards
- Manage Card Readers
- Miura Card Readers
  - USB Connectivity Configuration
  - Windows Setup
  - Customization
  - Troubleshooting

Merchant Setup
- Nexi Merchant Setup

Verifone P400

The Verifone P400 payment terminal is a PIN-pad device that is used in high-volume retail and hospitality environments. The merchant connects the terminal to a separate point-of-sale (POS) system or application that tracks and calculates the sales total for transactions. When the sales total for the transaction is determined, the customer is prompted to present a payment card to the terminal. The customer can swipe, insert, or tap their card to make a payment.

The P400 terminal has these features:

Color touch screen, angled display

Tactile keypad, color-coded function keys: red

X

(Cancel), yellow

<

(Clear), green

O

(Confirm)

Accepts contactless, EMV chip and PIN, and magstripe payment input options

PCI PTS 5.x approved security, compliance with end-to-end encryption

Connects via Ethernet or USB to POS Android or Windows solutions