Help – Tec question

I just graduated, and will be moving home for the next few months (before going back to school again). My brother is interested in risk, and as his year comes to a close he will have some extra free time. I would like to invite him to join, but I am afraid that we might get confused as a multi.
I believe the multi check is one of IP addresses. We will both be living in the same house, but will likely be making most of our moves from different computers. Will it still look like we are a multi?
If so, any thoughts in how this might work?

I believe the multi check is one of IP addresses. We will both be living in the same house, but will likely be making most of our moves from different computers. Will it still look like we are a multi?
If so, any thoughts in how this might work?
