> For the complete documentation index, see [llms.txt](https://docs.payments.thalescloud.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.payments.thalescloud.io/push-provisioning/implement-push-provisioning/implement-view-and-control/in-app-authentication-for-visa-ctf/unbind-a-device.md).

# Unbind a device

The Issuer can remove a previously established binding between an e-commerce digital card and a device.

This functionality is available through `DigitalCardService` and the `unbindDevice` API.

The following examples show how to use the API.

{% tabs %}
{% tab title="Android" %}

```kotlin
val digitalCardID = "" // obtained from digital card's device binding list
val bindingReference = "" // deviceIndex from device binding list
val reason: DigitalCardService.UnbindReason? =
    DigitalCardService.UnbindReason.USER_DECISION // optional; null defaults to ISSUER_DECISION

d1Task.digitalCardService().unbindDevice(
    digitalCardID,
    bindingReference,
    reason,
    object : D1Task.Callback<Void> {
        override fun onSuccess(data: Void?) {
            // Handle success.
        }

        override fun onError(e: D1Exception) {
            // Handle error.
        }
    }
)
```

```java
String digitalCardID = ""; // obtained from digital card's device binding list
String bindingReference = ""; // deviceIndex from device binding list
DigitalCardService.UnbindReason reason =
        DigitalCardService.UnbindReason.USER_DECISION; // optional; null defaults to ISSUER_DECISION

d1Task.digitalCardService().unbindDevice(
        digitalCardID,
        bindingReference,
        reason,
        new D1Task.Callback<Void>() {
            @Override
            public void onSuccess(Void data) {
                // Handle success.
            }

            @Override
            public void onError(@NonNull D1Exception exception) {
                // Handle error.
            }
        });
```

{% endtab %}
{% endtabs %}


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