Soundwave on 05 January 2025
People are speculating that there's a optical (?) sensor there for a mouse mode for the Joycon.
You can see it there above the middle docking port, it looks just like what's on a modern mouse.
It would be used like this:
https://www.reddit.com/r/NintendoSwitch2/comments/1hue2v6/if_the_speculation_is_true_its_not_bad_at_all/?share_id=lvA8L_JzJhhA_1G8t9-oO&utm_content=1&utm_medium=ios_app&utm_name=ioscss&utm_source=share&utm_term=1
I tried this with my current Joycons and yeah it would totally work.
