Sitecore's documentation always talks about how the same person comes back to the site and is identified. How are multiple persons handled?
Say that a person first enters the site (anonymous tracking), he logs in, and the tracking becomes an identified contact. The person logs out, but then his wife logs in, in the same browser, without closing anything. What happens in this scenario?
SC_ANALYTICS_GLOBAL_COOKIE will at that moment still point to the first person, and when identifying the second person, contact data will be merged.
This instinctively seems like a bad idea, and seems like it will copy data from the first contact to the second contact. Can
Tracker.Current.Contact be fully trusted in such scenarios (when logged in or not)?
So what is really happening when you have two people using the same computer/browser, which dangers does it pose, and how can you resolve any potential conflicts arising from such usage?