OPAL system on the buses?

Is this a new OPAL terminal on a bus?

Spotted by our roving transport correspondent, Callum P, on a bus in North Sydney this morning it doesn’t look like the OPAL terminals on the wharves, but it certainly looks like a touch-and-go terminal. The bus came fitted with two of these one by the driver and one in the luggage area.

The lack of an LCD screen makes me wonder if this is just a case of wishful thinking rather than the buses really gearing up their infrastructure; but it’s not impossible to believe that there are technical reasons for the design on a moving bus to differ to that attached to a wharf or station.

Does anyone know more?