GA: How do I preserve custom dimension across domain and subdomain?
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Using custom dimensions our site tracks logged-in vs not logged-in users on our shop site (shop.example.com). A user can only login on the shop.example.com.
The problem is when the logged in user visits our the main domain (example.com), we lose the custom dimension and the user becomes anonymous. At this point, if the user goes back to shop.example.com, the logged-in custom dimension comes back.
How do I preserve the logged-in user dimension across the main domain?
Example of snippet:
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Read more about setting up a linker here in Google Analytics: https://developers.google.com/analytics/devguides/collection/analyticsjs/linker this will make sure that you can at least have cross domain tracking.
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I'm not familiar with "linkers". How do I make sure GA is using linkers? Thanks.
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Hi,
The logic for a custom dimension can't usually be just passed on. But what you could do is make sure that Google Analytics is using the linkers to connect the shop subdomain to the root of the site. Which will make sure that the cookies for both do overlap and then you can apply the same logic to see if the user is logged in or not.
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