# SessionInformation


Information required for the streaming session.

## Contents


 ** Challenge **   <a name="rekognition-Type-rekognitionstreaming_SessionInformation-Challenge"></a>
Object containing information of Face Liveness challenge to be performed by the client. The information is used to construct the challenges at the client's SDK.  
Type: [ServerChallenge](API_rekognitionstreaming_ServerChallenge.md) object  
 **Note: **This object is a Union. Only one member of this object can be specified or returned.  
Required: Yes

## See Also


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/SessionInformation) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/rekognitionstreaming-2022-05-30/SessionInformation) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/rekognitionstreaming-2022-05-30/SessionInformation)