In Millennia Altered Destinies it's possible to run into an alternate version of yourself. When communicating with the other you's vessel, it's possible to transmit a numeric code. I've played this game many times but have never been able to figure out what to do in this situation.
The developers of the game (Take 2 Interactive) have this to say about the situation:
You are in the fifth dimension. An anomaly of time travel is that on rare occasions, you will actually meet another version of yourself that is traveling from another time, outside the material plane. When you encounter this phenomenon you can use it to your advantage, if you are very clever. There is some information that we can't bring ourselves to divulge to anyone.
I'm hoping to be very clever by asking this question here and getting the answer that way, not knowing what to do here has been bugging me for the past 15 years.