@NiamhAstra has a titan in the fingertip, the first finger segment, and -p0 in the palm. She says she really doesn’t like the first finger segment spot because it is painful while gripping. The other two are fine. She is getting spatial perception of fields subconsciously like she suspected she would with the combination of the three.
I have had several fingertip magnets including a titan, and I think it’s the best spot for sensing. I don’t have many problems with gripping. Here are my finger dimensions.