# ServerChallenge
<a name="API_rekognitionstreaming_ServerChallenge"></a>

Information on the challenge sent by the server.

## Contents
<a name="API_rekognitionstreaming_ServerChallenge_Contents"></a>

**Important**  
This data type is a UNION, so only one of the following members can be specified when used or returned.

 ** FaceMovementAndLightChallenge **   <a name="rekognition-Type-rekognitionstreaming_ServerChallenge-FaceMovementAndLightChallenge"></a>
Paramteters and configuration information for the face movement and light sequence challenges.  
Type: [FaceMovementAndLightServerChallenge](API_rekognitionstreaming_FaceMovementAndLightServerChallenge.md) object  
Required: No

## See Also
<a name="API_rekognitionstreaming_ServerChallenge_SeeAlso"></a>

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/rekognitionstreaming-2022-05-30/ServerChallenge) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/rekognitionstreaming-2022-05-30/ServerChallenge) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/rekognitionstreaming-2022-05-30/ServerChallenge)