--- title: checkAuthCode description: Checks authentication code. Works only when getAuthState returns authStateWaitCode. Returns authStateWaitPassword or authStateOk on success --- ## Method: checkAuthCode [Back to methods index](index.md) YOU CANNOT USE THIS METHOD IN MADELINEPROTO Checks authentication code. Works only when getAuthState returns authStateWaitCode. Returns authStateWaitPassword or authStateOk on success ### Parameters: | Name | Type | Required | Description | |----------|---------------|----------|-------------| |code|[string](../types/string.md) | Yes|Verification code from SMS, Telegram message, phone call or flash call| |first\_name|[string](../types/string.md) | Yes|User first name, if user is yet not registered, 1-255 characters| |last\_name|[string](../types/string.md) | Yes|Optional user last name, if user is yet not registered, 0-255 characters| ### Return type: [AuthState](../types/AuthState.md)