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
Reporting
Extensions
Embedded Components
Sequence Diagrams
![[NMI Developer Documentation]](https://files.readme.io/363a377-small-68761c5a-7cb7-470a-87fd-f6dadcc1a28e.png){kind=link}
![[]](https://files.readme.io/3a29497984b45a50da07981f40dfbcec590e46e5fb9b1872badfe46576e1eefe-TTM_Sequence_Diagrams-Just_TTM-2.jpg){kind=link}
![[]](https://files.readme.io/23bd71aa695a01e47c6723e5bdf824df2d6e99597a1a2a28e664fc4a08216404-TTM_Sequence_Diagrams-TTM__Payment_deivce.jpg){kind=link}
Updated over 1 year ago
Whats Next
Did this page help you?
Yes
No
Copy Page