4 - IDevice
MagTek Universal SDK| For MMS Devices | Programmer’s Manual ( Java )
Page 20
ITransaction
MerchantCustomData byte[]
20
EMV Tag 9F7C – Proprietary merchant data that may be requested. The
byte array is null by default.
Return Value:
Returns true if successful. Otherwise, returns false.
4.14
subscribeAll
This function allows the host to be notified of all events sent by the device.
boolean IDevice.subscribeAll(IEventSubscriber eventCallback);
Parameter
Description
eventCallback
Name of a class that implements the
Return Value:
Returns true if successful. Otherwise, returns false.
4.15
unsubscribeAll
This function allows the host to no longer receive any events sent by the device.
boolean IDevice.unsubscribeAll(IEventSubscriber eventCallback);
Parameter
Description
eventCallback
Name of a class that implements the
Return Value:
Returns true if successful. Otherwise, returns false.
