0x00 –Card Preference.
The device automatically chooses the application that is mutually supported by the card and the terminal, based on the priority order specified by the card. This is the default and is standard EMV transaction flow behavior.
0x01 – Reserved 0x02 – Reserved
0x03 – Enhanced Prompt Cardholder.
The device sends the host Notification 0x1803 – 02 02 00 00 (Display Cardholder, Data Attached, Reserved) to request that the cardholder select from a list of available applications. Each application may include additional tags such as - priority indicator, Issuer Country Code and Issuer Identification Number. After the cardholder selects an application, the host passes the selection to the device using Command 0x1802 - Report Cardholder Selection to device to return the cardholder’s selection to the device.