I've been thinking about suggesting my wife makes a Stack Exchange account. I think she would benefit from and be a good contributor to at least a few different sites.
I know multiple accounts used by a single user aren't prohibited, but are likely to be merged if they interact with each other... So my question is, how is this interaction monitored/detected? And how can I prevent me and my wife's accounts being wrongly detected as a single user’s multiple accounts (since we'll—for the most part—be using the same IP addresses, devices etc.)?