• 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