Authorization: This two-digit code identifies the actual method used to enter the cardholder account number and card expiration date. This code specifies whether the entire magnetic stripe is included in an authorization request.
| DISCOVER | MASTERCARD | VISA |
|---|---|---|
| 00 - Unknown, default to 00 | 00 - Unknown, default to 00 | 00 - Unknown, default to 00 |
| 01 - Manual (key entered) | 01 - Manual (key entered) | 01 - Key entry |
| 05 - Integrated circuit reader | 05 - Chip card read-data reliable | 05 - Chip card read-data reliable |
| 07 - Electronic commerce | 07 - Proximity payment originating using VSDC chip data rules | 07 - Proximity payment originating using VSDC chip data rules |
| 10 - NA | 10 - NA | 10 - NA |
| 79 - NA | 79 - Chip card—unable to read chip or magnetic stripe; manual | 79 - NA |
| 80 - NA | 80 - Chip card—fallback to magnetic stripe 3 | 80 - NA |
| 86 - NA | 86 - NA | 86 - NA |
| 90 - Voice authorization | 90 - Entire content of magnetic stripe was transmitted in authorization request (CVV) | 90 - Entire content of magnetic stripe was transmitted in authorization request (CVV) |
| 91 - Voice response unit (VRU) | 91 - Proximity payment originating using magnetic strip data rules | 91 - Proximity payment originating using magnetic strip data rules |
| 95 - NA | 95 - Initiated by chip card: CVV data may be unreliable | 95 - Initiated by chip card: CVV data may be unreliable |