News Nintendo VP confirms Switch 2 Joy-Cons won't feature Hall effect sticks

Could it be using optical tracking? With optical mice now being so cheap it could be economically feasible. On a technical level, it seems like it'd be relatively straight-forward to transplant the same tech into a joystick, where you have a sensor looking up at the bottom of the stick, which has a segment of a sphere attached to it, with a pattern similar to what you see on trackballs.

The biggest issue with the tech in trackballs is dirt accumulating in the sensor well. But, with a joystick, you could probably seal that part tightly enough that not much dirt can get in there.
 
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Could it be using optical tracking? With optical mice now being so cheap it could be economically feasible. On a technical level, it seems like it'd be relatively straight-forward to transplant the same tech into a joystick, where you have a sensor looking up at the bottom of the stick, which has a segment of a sphere attached to it, with a pattern similar to what you see on trackballs.

The biggest issue with the tech in trackballs is dirt accumulating in the sensor well. But, with a joystick, you could probably seal that part tightly enough that not much dirt can get in there.
It's cruft from the carbon track itself that causes the issue, just like a crackling volume dial from back in the day. I fixed every single one of my drifting joycons with some alcohol applied into the mechanism through a syringe, no disassembly required. That's not to say this was not an issue, it was, and it was exacerbated by the very short throw that joycons have. The new ones should have been hall effect, and as far as I know (I could check on amazon but I won't) hall effect sticks can be transplanted in to the old joycons, just like for other platforms.
 
Honestly I hope they are using TMR (Tunneling Magnetoresistance) as its MUCH better than hall effect.

much higher sensitivity detection & less power draw.

It's nice to hope they went from the crappiest joystick to the best tech...
If they went TMR, they would've bragged about it a while ago.