# Custom Guardian App return userId like gusr\_xxxx instead of Auth0 UserID

**URL:** <https://community.auth0.com/t/custom-guardian-app-return-userid-like-gusr-xxxx-instead-of-auth0-userid/6879>\
**Category:** Get Help\
**Tags:** guardian\
**Created:** [June 2, 2017, 1:20pm UTC](https://community.auth0.com/t/custom-guardian-app-return-userid-like-gusr-xxxx-instead-of-auth0-userid/6879 "2017-06-02T13:20:26Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Jason\_Chan](https://upload.wikimedia.org/wikipedia/commons/thumb/7/7c/User_font_awesome.svg/768px-User_font_awesome.svg.png) [@Jason\_Chan](https://community.auth0.com/u/Jason_Chan)\
**Post date:** [June 2, 2017, 1:20pm UTC](https://community.auth0.com/t/custom-guardian-app-return-userid-like-gusr-xxxx-instead-of-auth0-userid/6879/1 "2017-06-02T13:20:26Z")

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I am developing a custom (white label) Guardian App using Guardian SDK. So in the Multifactor Auth setting I specified AWS SNS settings. I have also enabled Custom Hosted Page for Guardian and use the widget as on the following exmaple

> **[auth0-guardian.js/example at master · auth0/auth0-guardian.js](https://github.com/auth0/auth0-guardian.js/tree/master/example)**
>
> Client library for Auth0 Guardian. Contribute to auth0/auth0-guardian.js development by creating an account on GitHub.

When doing enrollment, I scanned the QRCode on my custom hosted page. However the UserID I get from the QRCode is in format of “gusr\_xxxx” (xxxx is a hashed random string) instead of my userid in Auth0 (auth0|xxxx)

I have no idea what this userid coming from (look like a Guardian internal user identifier) , and how can I use it to associate with my Auth0 user.

Any idea?

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**Author:** ![jmangelo](https://sea1.discourse-cdn.com/auth0/user_avatar/community.auth0.com/jmangelo/32/7923_2.png) [@jmangelo](https://community.auth0.com/u/jmangelo)\
**Post date:** [June 2, 2017, 8:18pm UTC](https://community.auth0.com/t/custom-guardian-app-return-userid-like-gusr-xxxx-instead-of-auth0-userid/6879/2 "2017-06-02T20:18:35Z")

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If you’re developing a custom _Guardian-like_ application and you’re already at the step where you have a QR code that you can scan with your device then you check the reference documentation about how to add multifactor functionality into the application, more specifically, either:

- [Getting Started with Guardian for Android](https://auth0.com/docs/multifactor-authentication/developer/libraries/android)
- [Getting Started with Guardian for iOS](https://auth0.com/docs/multifactor-authentication/developer/libraries/ios)

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**Author:** ![Jason\_Chan](https://upload.wikimedia.org/wikipedia/commons/thumb/7/7c/User_font_awesome.svg/768px-User_font_awesome.svg.png) [@Jason\_Chan](https://community.auth0.com/u/Jason_Chan)\
**Post date:** [June 4, 2017, 3:31pm UTC](https://community.auth0.com/t/custom-guardian-app-return-userid-like-gusr-xxxx-instead-of-auth0-userid/6879/3 "2017-06-04T15:31:20Z")

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Yes. I am already follow the reference documentation. The problem is in enrollment , the UserID I got it in format of “gusr…”, I don’t know how can I identity the user from this user id, this is not the user id I got from my user list.

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**Author:** ![system](https://global.discourse-cdn.com/auth0/original/3X/b/5/b560f266932fcce5d57f09a6595bd50518cae3f3.jpeg) [@system](https://community.auth0.com/u/system)\
**Post date:** [March 2, 2018, 5:54am UTC](https://community.auth0.com/t/custom-guardian-app-return-userid-like-gusr-xxxx-instead-of-auth0-userid/6879/4 "2018-03-02T05:54:20Z")

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