Among standalone consoles, the Wii U belongs to this scheme as well the Switch started a new scheme. The current serial number scheme began with the DSi, hence its listing in the tables below.
Note that several different sales regions' console may be considered to be the same region for region-locking purposes, such as Europe and Australia. In some regions, a third letter is present a current guess is that this letter distinguishes among factories for a given sales region. The letter prefixes are a letter specifying the device, followed by one letter specifying the region in which it was sold. Separating into odd and even groups, we get the following:Īpplying the algorithm, we get ((3 * 19) + 21) % 10 = 8, which is not 0, thus 10 - 8 = 2, matching the example's check digit. To calculate the check digit, take this value modulo 10, and if not 0, subtract from 10. Multiply the sum of the even digits by 3, then add the sum of the odd digits. (The first digit is "odd", with "first" representing "1".)Īfter separating the digits, add the digits in each group together. To calculate the check digit of a 3DS console, separate the non-check digits into "odd" and "even" groups, where the "odd" group is digits in odd-numbered positions, and the "even" group is digits in even-numbered positions.
The check digit is an industry-standard algorithm, the one used for UPC codes. The ninth digit is a "check digit", meaning that it is derived from the other digits. A 3DS console serial number is composed of at least two letters followed by nine decimal digits.
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