Aether
Tingle
It's not the strength that's the problem, but the power consumption to keep it up.My thoughts are that only one side of the system needs to be electro magnetically charged (which would be on the tablet where the joycons connect). Them mentioning in that article of the SL and SR buttons now being metal, would make for the perfect conduit to connect to the magnetized section on the tablet.
Similar to how this magnetic lock below is only receiving current on one side to connect to the metal base plate that would attach to a door.
If any of you have used a ID badge at work on a secure door, those use electro magnetic locks to seal the door shut.
Not saying what Nintendo are using are remotely close to this strength, but the lock below can withstand 600lbs of force when active.
I would think if Nintendo came up with a solution it can withstand up to 10-20lbs of force before falling off...
Rosslare Security, LK-M06L Magnetic lock with Lock Status and Indicator, 600 LBS
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Elektromagnets are only magnetic while there is a current flowing through them. A) it uses up power to keep the connection, the stronger the more power it uses.
B) what happens when the power is done, does the connection just...stop? Joy cons falling of, or the switch falling out of your hand?