It's on the back of the console. It's a white sticker with a bunch of random numbers and letters on it. Though in most cases it rubs off, or wears out until you can't see it any more.
Hope I helped.
more commonly reffered to as the serial number, you can find it on a white strip on the back of a dsi. Every dsi has a different serial number.
A serial code for a dsi is on the back of the dsi under the barcode, only you start with tw not whatever is on there like this:TW582054296 Not a real code
Serial is a code to unlock a sofware. i love dsi XL IT is HUGEEE!
In the Dsi manual it says to call this number: 1-800-255-3700
100,108, and 456
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.
A DSi charge cable can be bought from any retailer that sells DS products or from the Nintendo website. The charger has the part number WAP-002 and is compatible with the DSi, DSi XL and 3DS.
serial number mavis beacon
Serial number.
after you have bought one,look on the back of it and scratch off the silver part and type your number in at the Nintendo dsi shop. connect to the internet go on Nintendo dsi shop click start shopping then click add Nintendo dsi points click the picture of the card and type it in :)
the serial number is on the back
The serial number of the titanic is 16458990231