# Help please - App logic for app sign-in **URL:** \ **Category:** Ask for Help\ **Created:** [May 10, 2020, 4:05pm UTC](https://community.glideapps.com/t/help-please-app-logic-for-app-sign-in/8864 "2020-05-10T16:05:32Z")\ **Posts on this page:** 1\ **Showing post:** 4
**Author:** ![Jeff\_Hager](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/jeff_hager/32/43_2.png) [@Jeff\_Hager](https://community.glideapps.com/u/Jeff_Hager)\ **Post date:** [May 10, 2020, 4:28pm UTC](https://community.glideapps.com/t/help-please-app-logic-for-app-sign-in/8864/4 "2020-05-10T16:28:57Z")
Here’s a similar thought on this. > [@Connecting Buyers (public app) to ONE Seller (admin app) at sign-up](https://community.glideapps.com/t/connecting-buyers-public-app-to-one-seller-admin-app-at-sign-up/8542/2): > > Just some random thoughts on this. Before I read it, I had thought of the unique code idea to link the buy to the seller. You could have a screen with a text entry field set to fill a user specific column. This entry field will be used to enter a code. Then use that user specific column to create a multiple relation to the sellers list. You could then display an inline list of the matching seller that matches that code. Alternately, you could make the relation a single relation, then use a … --- _[View the full topic](https://community.glideapps.com/t/help-please-app-logic-for-app-sign-in/8864)._