# \#sign-in **URL:** https://community.auth0.com/tag/sign-in/907.md [Latest](https://community.auth0.com/latest.md) · [Categories](https://community.auth0.com/categories.md) · [Tags](https://community.auth0.com/tags.md) --- ## [Allow only a single single signon per client](https://community.auth0.com/t/allow-only-a-single-single-signon-per-client/9472)
**Author:** [@chj](https://community.auth0.com/u/chj)\ **Replies:** 1\ **Last updated:** [December 17, 2018, 3:29pm UTC](https://community.auth0.com/t/allow-only-a-single-single-signon-per-client/9472 "2018-12-17T15:29:06Z")
Hi I have a tenant with 2 clients. I want to limit my users to one active “session” per client inside that tenant. How can I achieve this? I was thinking of disabling all access tokens for a user on a single client whe… --- ## [Proper way of pre-creating and pre-authorizing users for custom magic app links?](https://community.auth0.com/t/proper-way-of-pre-creating-and-pre-authorizing-users-for-custom-magic-app-links/9322)
**Author:** [@matejukmar](https://community.auth0.com/u/matejukmar)\ **Replies:** 1\ **Last updated:** [December 14, 2018, 6:24pm UTC](https://community.auth0.com/t/proper-way-of-pre-creating-and-pre-authorizing-users-for-custom-magic-app-links/9322 "2018-12-14T18:24:01Z")
We have a mobile app which uses Auth0 for user authorization. One of our clients came with an idea to have deep links sent to specific users by email - so we know basic information about each user link is sent to (name a… --- ## [App\_metadata is missing in token generated by using "Sign In As" feature](https://community.auth0.com/t/app-metadata-is-missing-in-token-generated-by-using-sign-in-as-feature/8413)
**Author:** [@hlyzov](https://community.auth0.com/u/hlyzov)\ **Replies:** 0\ **Last updated:** [October 6, 2017, 10:26pm UTC](https://community.auth0.com/t/app-metadata-is-missing-in-token-generated-by-using-sign-in-as-feature/8413 "2017-10-06T22:26:38Z")
I want to make sure that certain user can sign in. I use “sign in as” feature in Users panel and receive an url like …/impresonate?&bewit=… . Using this url I’m able to sign in as user, but the token is different from an… --- ## [Password confirmation](https://community.auth0.com/t/password-confirmation/8015)
**Author:** [@carsten.mueller.lemb](https://community.auth0.com/u/carsten.mueller.lemb)\ **Replies:** 4\ **Last updated:** [August 31, 2017, 1:23pm UTC](https://community.auth0.com/t/password-confirmation/8015 "2017-08-31T13:23:00Z")
How can we add a field for password confirmation in the sign-up dialog , part of login template. We have done it successfully for the password reset process using that one: passwordConfirmationPlaceholder: “confirm you…