The host uses this command to provide a cardholder selection to the device when the device itself does not have a display or inputs to prompt the cardholder for a selection.
Sequence of events:
1
Transaction already started
The host has already invoked Start Transaction - Command 0x1001 and the transaction is still in process.
2
Device requests host UI action
During the transaction, if the device does not have a display or touchscreen but needs to show information to the cardholder or needs the cardholder to make a selection, it sends the host User Interface Host Action Request - Notification 0x1803 to report Display / Cardholder Selection and supporting information.
3
The host uses its user interface to request a selection from the cardholder based on the information and selectable items provided by the notification message.
4
The host sends the user selection to the device by sending Command 0x1802 in the format described below.
Beginning of any wrappers, at minimum including Request Message.
Tag
Len
Value / Description
Typ
Req
Default
If the request started successfully, the Request Status in the message wrapper is OK, Started / Running, All good / requested operation was successful.
Response Data for Report Cardholder Selection - Command 0x1802
Beginning of any wrappers, at minimum including Response Message.
Tag
Len
Value / Description
Typ
Req
Default
81
01
Cardholder Selection Request Status
- 0x00 = Cardholder Selection Request completed, see Selection Result parameter.
- 0x01 = Cardholder Selection Request canceled by cardholder, Transaction Aborted.
- 0x02 = Cardholder Selection Request timed out, Transaction Aborted.
B
R
82
01
Selection Result — Menu item index the cardholder selected. If the cardholder made no selection or the operation terminated abnormally, the device does not include this parameter.
B
O
End of any wrappers, at minimum including Request Message.
No parameters.
End of any wrappers, at minimum including Response Message.
1802
Report Cardholder Selection = Command 0x1802
1802
Report Cardholder Selection - Command 0x1802
Host prompts cardholder
Host reports the selection to the device
Request Data for Report Cardholder Selection - Command 0x1802