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#ask-questions
Title
# ask-questions
g

green-beard-48160

06/06/2023, 10:26 AM
Hey all, I’m investigating how to work with GB, and our situation is that most of our users are conflicted, because typically use multiple devices, and our period of conversion is long enough., and we test usually features before login, so we can’t match them by user_id. What the solutions could be implemented with GB to deal with it?
s

square-leather-98692

06/06/2023, 10:54 AM
Spurious thoughts;
because typically use multiple devices
GA4 Data Stream to bridge platforms merging over
user_id
&
pseudo_user_id
and our period of conversion is long enough
Ramp up conversion window
and we test usually features before login
match by
pseudo_user_id
?
happy to be informed that I am, in fact, completely wrong.
😄
f

fresh-football-47124

06/06/2023, 2:12 PM
There aren’t great ways to ensure consistent variations across devices without knowing who they are first. A few thoughts/ideas: 1. Bucket your users by IP, if they are using different devices on the same network. 2. GrowthBook will automatically remove double exposed users if you set the experiment to the user_id for your case (and make sure the join works between the anon id and user id on the data sources page) 3. Set up a simple caching/lookup API to assign users- but I’m not sure what other information is available here that would make this an improvement.
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