# Cross reference csv userlist against new users

**URL:** <https://meta.discourse.org/t/cross-reference-csv-userlist-against-new-users/71066>\
**Category:** Product Support\
**Created:** [29. September 2017 um 19:41 UTC](https://meta.discourse.org/t/cross-reference-csv-userlist-against-new-users/71066 "2017-09-29T19:41:25Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![robmc](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/robmc/32/125900_2.png) [@robmc](https://meta.discourse.org/u/robmc)\
**Post date:** [30. September 2017 um 07:10 UTC](https://meta.discourse.org/t/cross-reference-csv-userlist-against-new-users/71066/5 "2017-09-30T07:10:15Z")

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Bit of a sledgehammer to crack a nut … but could you implement SSO across the two forums with the large original forum doing the authentication against its user list?

This would establish a single unique database and you would also be able to link the activity of members in both …

not sure whether your 25% would be able to register on the original forum as well … but just a thought

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