Subscribeall; Unsubscribeall - Magtek Universal SDK Programmer's Manual

4 - IDevice
MerchantCustomData
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
eventCallback
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
eventCallback
Return Value:
Returns true if successful. Otherwise, returns false.
MagTek Universal SDK| For MMS Devices | Programmer's Manual ( Java )
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EMV Tag 9F7C – Proprietary merchant data that may be requested. The
byte[]
20 byte array is null by default.
Name of a class that implements the IEventSubscriber Delegates event.
Name of a class that implements the IEventSubscriber Delegates event.
ITransaction
Description
Description