1. Access Codes
Access codes are unique identifiers for amusement cards. They are formed of 20 numeric digits, typically grouped into five groups of four. When handled in binary they are encoded using BCD as a series of 10 bytes.
Three unique formats currently exist, which can be identified based on their first digit:
| First digit | Usage |
|---|---|
0 |
Classic AiMe cards |
3 |
Banapass cards |
5 |
Amusement IC |