Two charts,
read as a pair

The same six traditions, applied to a relationship rather than a person: where you meet easily, where you grind, and which of the two of you carries which side of it.

A bond needs the other person's birth moment, so it asks whether they agreed to it before it will save anything. That gate is real rather than decorative: a bond keeps their details on this device and reads the relationship, which is not something to do to someone quietly.

You can also build someone their own reading instead. That one stores nothing at all and hands back a link that carries their birth moment in the part of a URL browsers never send to a server, so it is theirs to open and yours to forget.