I think I need, for lack of a better description, a next-level container...
The same customer might visit under different Adobe IDs. Let's say I capture the customer account in an eVar. How can I segment on that account ID when the largest container available is "visitor", which is based on the Adobe ID?
For example, separating Purchasers and Non-purchasers is not possible by Adobe ID, as the same account might do a part of the journey under one Adobe ID and another part under another.
I am fairly certain it's a common situation, so there's got to be a solution, but I can't seem to figure it out.
If you capture customer account number in an eVar, and then the same customer account number visits your site on 3 separate devices, a segment that looks for visitors with that specific customer account number would capture all 3 of my visits & unique visitors on the site. You won't be able to combine these 3 different devices into the same unique visitor, but as long as the customer logged in on all 3 devices, you'll be able to see them with a "visitor" level segment.