I would be able to detect people as if they were hiding or using paranormal energies to stealthily seek out opponents hiding or underneath objects. I say this because at first I was unsure of what a soul was but now that I have some understanding of it, I can direct you to look at Thanos during Infinity War, more specifically during his battle against Dr. Strange, and even more specific is when Dr. Strange uses clones, who use ropes to bind his arms separately. Dr. Strange had nothing to give himself away to make an easy target for Thanos but he uses the Soul Stone to detect which one was the real one along with the Power Stone to create an omni-directional energy pulse that destroys the clones.
