Hall effect sensor expert here! No, the magnets in the joycons that are used to attach to the display/body of the Switch 2 would not interfere with hall effect analog sticks.

Two reasons:

The magnets are too far away (sensors are usually only sensitive to magnets within 10-12mm directly above/below)
The mounting/attachment magnets would be perpendicular to the magnets in the analog sticks (if you imagine the flux lines they wouldn't cross the sensory boundary).

Regardless, it would be trivial to place a tiny little piece of ferromagnetic blocking tape wherever necessary to prevent interference.

[–] VindictiveJudge 1 points 7 hours ago

Would the NFC system in the stick interfere with hall effect sensors?

[–] ieatpwns 27 points 15 hours ago

Noooooo

[–] ieatpwns 12 points 15 hours ago (1 children)

I’m not a scientist but I’m pretty sure theyd be able to calibrate the sensors to ignore the magnetic force of the attachment points

[–] FrodoSpark 3 points 15 hours ago

Maybe, I got the Pimax Portal a while back and due to their magnetic attachments Hall Effect sticks wouldn't work. I'm sure Nintendo would have a better time solving this issue than Pimax would though

[–] dtrain 6 points 15 hours ago

That Doesnt affect Hall & Oates sensors, though.

[–] [email protected] 5 points 13 hours ago

Rumors/Leaks had them and they were right about what we see in the trailer so hopefully. I'm hoping yes, nintendo must be tired of repairing joycons ^^

[–] [email protected] 3 points 15 hours ago (1 children)

The joy cons were awful for that.

[–] atrielienz 3 points 13 hours ago

I updated my Joycons to the hall effect sticks and they're awesome. No drift after several months.