your dsi pin code is were you come up with a pin. and when you are done every time you open your dsi you have to tipe in your pin.
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answer secret questions on tools
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If you forgot it you could call Nintendo and tell them you forgot your pin and answer to your secret question. You have to give them the Inquiry number shown on the DSi. They will give you a Master Key. You put the five-digit number into the DSi now you can change the pin and answer to the question. Hope it helped. :)
call the number given in the operation guide and you will get the master key, then with the code number they give you enter it into the dsi and then the parental controls will open.
There is no password for a Nintendo DSi, well there is a password called a Pin in Parental Controls. Just go to System Settings and go to Row 3 then tap Parental Controls. That is where you can create/change your Pin.
you cant
You have to take out the battery in the DSi. Do this by screwing the screws out.
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A pin is used so if someone steals your DSI they cant use it because they need to know the pin to use it. Basiclay it has a pin for the same reason as a i pod has a pin. -Bow to Arrow Shield to Sword-
you the dsi support line