Please just finally ban it altogether worldwide. It costs more than it gains in tax money. I just hate smokers and their rudeness around non-smokers so much, especially when you're allergic and they just get physically aggressive when you ask them to move a few steps...
it's batteryless save (uses sram as temp storage and then copies over into rom data)
you can even flash your own games to it with a tool called gba multimenu, look it up on google cheers
the 3ds doesn't even have a bluetooth controller chip...
you would need the pokemon typing game cart inserted and create a 3ds driver to access that.
no other bluetooth stuff exists on nintendo handhelds before switch.