Like the title says - what’s needed to be able to use the Aura Reading skill? Second Sight (trait) and Magesense (spell) are the only two I can find. Anything else?
You could probarbly read the description someone else gives you of the aura they have seen but with an increased Ob.
Can you maybe use spirit binding to make the spirits reveal the aura of people to you?
Found another - Manhunter (trait). That’s all I know so far…
There’s a few in the Monster Burner, too.