# Advanced flows

> Enterprise-grade terminal integrations — loyalty, authorization adjustment, pay-at-table, card acquisition, and more.

Advanced flows extend the standard payment integration with complex checkout, data-capture, and loyalty scenarios. All flows in this section require enterprise enablement on your VINR account — contact your account manager before building.

## When to use advanced flows

| Flow                                                                                   | Use case                                                                                                  |
| -------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------- |
| [Loyalty](/docs/payments/in-person/advanced/loyalty)                                   | Identify returning customers at the terminal, award points, and redeem rewards at checkout                |
| [Authorization adjustment](/docs/payments/in-person/advanced/authorization-adjustment) | Modify a hold amount after authorization — hotel pre-auth, fuel pumps, tabs                               |
| [Pay at table](/docs/payments/in-person/advanced/pay-at-table)                         | Split a bill, pay by item, or add service charge from a handheld terminal at the table                    |
| [Card acquisition](/docs/payments/in-person/advanced/card-acquisition)                 | Securely capture card data at the terminal without immediately charging — store-on-file, instalment setup |
| [Autonomous stores](/docs/payments/in-person/advanced/autonomous-stores)               | Unattended checkout — card tap to open, implicit close, frictionless AI-driven payment                    |
| [Shopper engagement](/docs/payments/in-person/advanced/shopper-engagement)             | Capture email, loyalty ID, or survey responses on the terminal screen during the payment flow             |

## Common prerequisites

All advanced flows share the same prerequisites:

- Enterprise account with the relevant feature enabled by your account manager.
- VINR SDK `v3.0` or later (advanced flow APIs are not available in `v2.x`).
- Terminal firmware `4.0` or later on all devices in scope (check **Dashboard → Hardware → Health**).
- Webhook endpoint registered and verified (see [Webhooks](/docs/payments/in-person/webhooks)).