My 2 cents, from someone who’s played inplant Tetris
Move the purple next, to that associated wrist
I like to go every other location alternating frequency, high frequency in location P1, low frequency in P2
Etc
And a next on the top of the hand would make potentially conflict with both frequency ranges
Another location would be knife edge for the NExT, it’s a super useful location… just make sure to figure out where you’re bones are when you press the side of your hand on a table, and go a smidge more inwards
This was my rough idea, it changed a little but you get the idea, red is lf blue is hf
Other advice, positions 90° relative to each other have much less worry about interference,
For example, I have one under the bottom of my thumb bordering my palm, one in the standard webbing, and one on the top of my hand
They are all close, but I’m various places rotational around my hand, so when one is being read it makes the others farther away
Other food for thought, I don’t think the antenna vs antenna orientation matters besides P0 webbing of hand, I find led closer to wrist is better than when others want to scan it with their phone, the led sticks out from under… the other way would be more obscured
I don’t think alternating the orientations will change any interaction of the fields, I’d just orient them all the same way for aesthetics