> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dintero.com/llms.txt
> Use this file to discover all available pages before exploring further.

# In-person payment test data

> Test in-person (terminal) payments in the Dintero sandbox using the Visa CDET and American Express Payment Test Emulator Android apps to simulate contactless cards.

To test an in-person payment you need a Dintero payment terminal in the sandbox and something to tap against it. Instead of a stack of physical test cards, use a card emulator app on an Android phone. The app turns your phone into a contactless test card:

* **Visa**: [Visa CDET](https://play.google.com/store/apps/details?id=com.visa.app.cdet) (Contactless Device Evaluation Toolkit), with several card profiles and edge cases.
* **American Express**: [American Express Payment Test Emulator](https://play.google.com/store/apps/details?id=com.americanexpress.android.testemulator).

> [!TIP]
>
> To test without a physical terminal, use a [simulated terminal](https://docs.dintero.com/docs/checkout/in-person/simulated-terminals.md).

> [!NOTE]
>
> The emulator apps are intended for testing only. Use them against terminals that are configured for the sandbox environment, never against production terminals.

## What you need

* An Android device with NFC.
* A Dintero payment terminal registered to a store in the sandbox. See [terminal onboarding](https://docs.dintero.com/docs/checkout/in-person/terminal-onboarding.md).
* The ability to change the phone's default wallet / contactless payment app.

## Visa

### Install the Visa CDET app

Install **Visa CDET Application** from the Google Play Store:

> **[Visa CDET on Google Play](https://play.google.com/store/apps/details?id=com.visa.app.cdet)**
>
> `com.visa.app.cdet`

### Set CDET as the default wallet app

For the terminal to talk to CDET instead of Google Wallet (or any other wallet), you need to make CDET the default contactless payment app on the phone.

**1. Open the NFC / wallet settings**

On your Android device, open **Settings** and search for *Default wallet app* (sometimes under **Connected devices** > **NFC** > **Contactless payments**). The exact path varies by manufacturer.

**2. Select CDET**

Choose **CDET** from the list of installed wallet apps.

![Selecting CDET as the default wallet app in Android settings](https://mintcdn.com/dintero-c3a7bfec/lok_9fdq3SgYG0jo/docs/checkout/testdata/other/assets/cdet-default-wallet-app.jpg?fit=max\&auto=format\&n=lok_9fdq3SgYG0jo\&q=85\&s=9ab8a7d70607bb95813409ab3ee49a83)

> [!WARNING]
>
> Switch the default back to your normal wallet app when you're done testing. Otherwise real contactless payments from the phone will stop working.

### Test cards

Open the **Visa CDET Application**. You'll see a list of test cards, each modeling a specific card profile or edge case (baseline Visa Contactless Payment Specification (VCPS) compliance, unusual Processing Options Data Object List (PDOL) requests, multi-application cards, missing cardholder name, and so on).

![List of CDET test cards with different behaviors](https://mintcdn.com/dintero-c3a7bfec/lok_9fdq3SgYG0jo/docs/checkout/testdata/other/assets/cdet-card-list.jpg?fit=max\&auto=format\&n=lok_9fdq3SgYG0jo\&q=85\&s=9f06c683b567352fdcc958a91f088477)

Select the card that matches the scenario you want to test, then tap the phone against the terminal when it prompts for payment.

| Card | Typical use |
| - | - |
| **Card 01**: CDET Baseline (VCPS 2.0.2) | Happy-path contactless payment. |
| **Card 02**: CDET Baseline (VCPS 2.2) | Happy-path contactless payment on a newer VCPS version. |
| **Card 03**: 16-byte ADF, 2-byte TTQ, min-length cardholder name | Exercise the terminal's handling of unusual Application Definition File (ADF), Terminal Transaction Qualifiers (TTQ), PDOL, and cardholder name values. |
| **Card 04**: Multi-application card, no cardholder name | Verify behavior when the card exposes additional applications and omits the cardholder name. |

Refer to the card description shown in the app for the exact behavior of each entry. The list is maintained by Visa and updated with each CDET release.

## American Express

> [!NOTE]
>
> American Express on terminals is only available to merchants with a direct agreement with American Express.

### Install the American Express emulator

Install **American Express Payment Test Emulator** from the Google Play Store:

> **[American Express Payment Test Emulator on Google Play](https://play.google.com/store/apps/details?id=com.americanexpress.android.testemulator)**
>
> `com.americanexpress.android.testemulator`

### Test cards

**1. Open contactless mode**

Open the **American Express Payment Test Emulator** and tap **Contactless**.

**2. Choose a test card**

Select the card you want to test with.

**3. Tap the phone against the terminal**

Tap the phone against the terminal when it prompts for payment.

## Run a sandbox payment

**1. Create a terminal session**

Create a session that targets your sandbox terminal. See [creating a terminal session](https://docs.dintero.com/docs/checkout/in-person/creating-terminal-session.md).

**2. Tap the phone against the terminal**

When the terminal prompts for payment, hold the phone against the terminal's contactless zone. Select the desired test card first.

**3. Observe the result**

The terminal completes the flow as if a real card were tapped. The resulting transaction shows up in Backoffice and via the standard Checkout API, so you can verify authorization, capture, and callback handling end-to-end.

## Related

> **[Onboard a terminal](https://docs.dintero.com/docs/checkout/in-person/terminal-onboarding.md)**
>
> Register a store and link a terminal before you start testing.

> **[Create a terminal session](https://docs.dintero.com/docs/checkout/in-person/creating-terminal-session.md)**
>
> Build the session payload that drives the terminal.


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