# Visa

- [Android SDK](/halo-dot/sdk/branding-guidelines/visa/android-sdk.md)
- [Step 1: Prerequisite](/halo-dot/sdk/branding-guidelines/visa/android-sdk/step-1-prerequisite.md)
- [Step 2: Integration](/halo-dot/sdk/branding-guidelines/visa/android-sdk/step-2-integration.md)
- [Step 3: Integrations (Optional)](/halo-dot/sdk/branding-guidelines/visa/android-sdk/step-3-integrations-optional.md)
- [Appendix](/halo-dot/sdk/branding-guidelines/visa/android-sdk/appendix.md)