Previous Tab Info on Mobile App

We implemented something like this, to replicate Activity Map on our websites. So like Activity Map, we track the previous page, link text and link region. Passing the three values into 3 dimensions (the same dimensions we copy our Activity Map info into, so that we can create reports in Workspace that look at web and app together, or can be separated out.

I should note that our Web Implementation has done a lot of work to make the "regions" usable, by configuring our settings to use a custom data attribute for our region names (instead of just grabbing the nearest ID which is mostly unreadable).

Essentially, we broke our website it regions, things like "header", "footer", "main-menu", etc... including setting content block level regions to distinguish "news" or "sports" or "opinion" blocks (we are a news org, but blocks can be configured for any site to get the most out of your page layouts).

Now, on the app, all of this work had to be done by the developers... for every interaction, they needed to store the current page name, the link text (or for PII an alternate override text), and the designated region for the click... carry that forward to the next screen view, and add that as context variables on our trackState call.

I should note we are still using the ACP SDK, and not yet the AEP SDK... in theory, I believe that using AEP and XDM Schema, you might be able to pass the info directly into the Activity Map keys (if this is what you want to do, however, if you are using the Extension, this might cause some issues.... we don't use the extension, nor can I pass info directly to the Activity Map... hence my replication dimensions)

Since you are just passing data to eVar5 on your website (looks like previous URL), I would assume that each page / screen / tab in your app has a "logical" url that matches to its web counter-part... you should just instruct your developers to pass the previously set URL value as a context variable so that you can map it to eVar5 in processing rules... or if you are using the atags custom schema, in the XDM Stream, they can set the eVar5 value directly.