Magtek mDynamo Programmer's Manual page 60

7 - Commands
iv) The device ends the transaction by sending the host Notification 0x0304 - Transaction
Result Message, which contains transaction details the host should save for later verification.
The transaction result message indicates whether the host must prompt the cardholder to
provide a signature.
d) If Quick Chip operation is NOT supported or is not in effect:
i) The device sends the host Notification 0x0300 - Transaction Status / Progress
Information to report Transaction Progress Change/ Waiting for Online Processing
Response.
ii) The host processes the ARQC Message data and uses it to coordinate with the transaction
processor to receive an ARPC Response, which it processes and sends to the device using
Extended Command 0x0303 - Online Processing Result / Acquirer Response (EMV
Only). (Contact Only) Alternatively, the host may implement host-driven Quick Chip by
instead constructing its own preliminary ARPC Response with tag 8A set to 'Z3' and sending
it to the device immediately, without waiting for a transaction processor response. The
device responds by sending Notification 0x0301 - Display Message Request to the host with
message
DECLINED
take over the remainder of the transaction, including notifying the cardholder to remove the
card, determining the final transaction amount, coordinating with the transaction processor to
retrieve a final transaction result, and interacting with the cardholder.
iii) The device communicates with the chip card to determine whether to approve or decline the
transaction, then sends the host Notification 0x0300 - Transaction Status / Progress
Information to report Transaction Progress Change / Transaction Complete.
iv) The device sends the host Notification 0x0300 - Transaction Status / Progress
Information to report End of Transaction and either Transaction Approved or
Transaction Declined, then and sends the host Notification 0x0301 - Display Message
Request with message
transaction result.
v) The device ends the transaction by sending the host Notification 0x0304 - Transaction
Result Message, which contains transaction details the host should save for later verification.
The transaction result message indicates whether the host must prompt the cardholder to
provide a signature.
mDynamo| OEM Secure Card Reader Authenticator | Programmer's Manual (COMMANDS)
and ending the transaction. The host should suppress this message and
or
APPROVED DECLINED
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to notify the cardholder of the