On the Nintendo 3DS you have two options 1) use face tracking for 3D (similar to Lume Pad) or 2) don’t use eye tracking at all (the mode I always found much more comfortable on my Nintendo 3DS).
This is personal comfort preference, I know. Maybe I am alone but this makes a big difference in comfort to me. I wish there was this option on my Lume Pad 2. Maybe I’m missing something, thus this post.
FTR Enabling/disabling face tracking for the 3D on the Nintendo 3DS is called “Super Stable 3D”. I added this as a comment as for some reason I cannot update my initial post.
I also would want to use sometimes without eye-tracking, because when the ambiental light is low it is impossible to watch 3D (or even annoyingly is being constantly enabling and deactivating it)