Get Started
- Explore Payment Solutions
- Developer Docs MCP
- Get Your API Keys
- Third Party Integrations
- Classic API Migration Playbook
Design Toolkits for Developers
Online Payments
- Online Payments Overview
- Payment Component
- Customer Vault
- Recurring Transactions
- Hosted Checkout
- Custom Checkout
- Collect.js
In-Person Payments
- In-Person Payments Overview
- Enabling Test Mode
- Tap to Pay on iPhone
- Enable Tap to Pay
- Downloading the SDK
- Unboxing the iOS SDK
- Creating and Managing Security Keys
- Preparing for Development
- Firewall Configuration
- Transaction Flow
- Sequence Diagrams
- Modes of Operation
- Configuration
- Configuration and Utility Methods
- Configuration and Utility Events
- Start Transaction
- Transaction Events
- Receipts
- Supported Features
- User Experience Requirements
- Regional Requirements
- Preparing for Release
- Entitlement Review
- Frequently Asked Questions
- Tap to Pay on Android
- Enable Tap to Pay
- Downloading the Android SDK
- Unboxing the Android SDK
- Creating and Managing Security Keys
- Preparing for Development
- App Onboarding
- Firewall Configuration
- Transaction Flow
- Sequence Diagrams
- Modes of Operation
- Configuration
- Configuration and Utility Methods
- Configuration and Utility Events
- Start Transaction
- Transaction Events
- Receipts
- Supported Features
- Contactless Symbol Reproduction Requirements
- Frequently Asked Questions
- VP3350
- Unboxing your VP3350 device
- Enable Test Mode
- Downloading the Android/iOS SDK
- Unboxing the Android/iOS SDK
- Creating and Managing Security Keys
- Platform Specific Requirements
- Firewall Configuration
- Transaction Flow
- Configuration
- Configuration and Utility Methods
- Configuration and Utility Events
- Payment Methods
- Payment Events
- Deferred Authorizations
- Surcharging
- TMS Properties
- Receipts
- App Submission
- Appendix: Quick Reference Tables
- Axium SmartPOS
- Lane/Series
- Self/Series
- Test Card Simulator
- Device SDKs & APIs
- Direct Connect
![[NMI Developer Documentation]](https://files.readme.io/363a377-small-68761c5a-7cb7-470a-87fd-f6dadcc1a28e.png){kind=link}
![[]](https://files.readme.io/abed16dd359f863206bd5c1bfa43165e99c6d4820568a4207151b03f3a7715f5-1_-_Surcharge_in_Checkout.png){kind=link}
![[]](https://files.readme.io/6607713a226cb4cc8a57d132645234263cad14e741b2531532b0391d5890dbc6-2_-_Dual_Pricing_in_Checkout.png){kind=link}
![[]](https://files.readme.io/0d23004e751f9710148e7c8d9b4ece9edcbea5723f2e5710f9d892bfbc693fd9-3_-_Surcharge_and_Dual_Pricing_Receipts.png){kind=link}