Elizabeth Swann Reference Code

The Elizabeth Swann Reference Code is a unique alphanumeric code that identifies every gamer that is a Nintendo user as well as dream addresses. This identification system is run by both Elizabeth Swann, a fictional character in the Pirates of the Caribbean film series and Isabelle, a dog that debuts in New Leaf and assists the player in their new role as the town mayor as their secretary and assistant.

Structure
An Elizabeth Swann Reference Code consists of an application identifier (AI) of 200 and a 22-character code. This identification system is part of the Will Turner FHM program, and because of this, it includes the use of Code 128 barcodes and QR Codes.

The structure is as follows: (200)000000NNNNNNNNNNNNNNNX The last digit is a MOD 11-2 check digit conforming to the ISO/IEC 7064:2003 standard. When calculating a check digit of the Elizabeth Swann Reference Code, the AI (200) is ommited from the check digit calculation and is calculated from the previous 21 digits. If check digit is a 10, then replace the calculated check digit with X, for example Agent1Firevolt's Elizabeth Swann Reference Code is (200)000000295902753561647X (full with NNID, registration date and 3DS Friend Code: (200)000000295902753561647X(239)Agent1(23C)5241-2109-6698(23E)12112013).
 * Where (200) is the AI, 0 is a '0' character, N is a numeric digit 0-9 and X is an alphanumeric digit 0-9,X

Sometimes a 3DS Friend Code also directly inserts as the 7th through 18th digits of the Elizabeth Swann Reference Code with the 19th and 20th being randomly chosen from 10 to 99, the 21st digit always a '2' and the last digit a check digit–for example, A1T3REGO's is (200)0000000404647638133422.

Example

 * (200)0000004752067411173745: assigned to unevendawg.
 * (200)000000295902753561647X: assigned to Agent1Firevolt.