[android-components](../../../index.md) / [mozilla.components.concept.engine.prompt](../../index.md) / [PromptRequest](../index.md) / [Authentication](index.md) / [onConfirm](./on-confirm.md)

# onConfirm

`val onConfirm: (`[`String`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`, `[`String`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`) -> `[`Unit`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) [(source)](https://github.com/mozilla-mobile/android-components/blob/master/components/concept/engine/src/main/java/mozilla/components/concept/engine/prompt/PromptRequest.kt#L166)

callback to indicate the user want to start the authentication flow.

### Property

`onConfirm` - callback to indicate the user want to start the authentication flow.