# SignInPolicyType
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The policy for allowed types of authentication in a user pool. To activate this setting, your user pool must be in the [ Essentials tier](https://docs.aws.amazon.com/cognito/latest/developerguide/feature-plans-features-essentials.html) or higher.

This data type is a request and response parameter of [CreateUserPool](API_CreateUserPool.md) and [UpdateUserPool](API_UpdateUserPool.md), and a response parameter of [DescribeUserPool](API_DescribeUserPool.md).

## Contents
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 ** AllowedFirstAuthFactors **   <a name="CognitoUserPools-Type-SignInPolicyType-AllowedFirstAuthFactors"></a>
The sign-in methods that a user pool supports as the first factor. You can permit users to start authentication with a standard username and password, or with other one-time password and hardware factors.  
Type: Array of strings  
Array Members: Minimum number of 1 item. Maximum number of 4 items.  
Valid Values: `PASSWORD | EMAIL_OTP | SMS_OTP | WEB_AUTHN`   
Required: No

## See Also
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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/cognito-idp-2016-04-18/SignInPolicyType) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/SignInPolicyType) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/cognito-idp-2016-04-18/SignInPolicyType)