The AU immigration system of card from a kiosk to then put that into another kiosk/machine is a system from decades ago.
Some other countries have 1 kiosk/machine/photo that does it all.
The machine that gives you that cardboardy printout, is no longer being used.
Its now a different machine you go to first, after deplaning.
It does not issue you that cardboardy card anymore, when you slip your passport into the reader and answer those questions, it issues this receipt with your photo on it, from a photo camera that meets your passport photo, when you have slipped your passport in, and answer those questions.
So, no more cardboardy printout, means no more slipping that into the 2nd camera, you slip your passport into that first gate, and a 2nd gate, and then hand in your mugshot print out and IPC to the officer before you enter the public area.
They changed the first sort of waist high kiosk, to one thats larger, and wider, and more like shoulder height, with a camera in there already, to take your photo, at the very stage of immi incoming step procedure.
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Also, it does depend on the number of pax.
MEL has a lot of pax on a lot of flights, while OOL and ADL, and PER have less int pax.
BNE and SYD too, I would say, will have a "bottleneck" issue, as they all 3 have a lot of arrivals esp in the am peak when curfew ends.
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Who knows too, maybe when we enter our passport and answer those questions, already then, our actual photo being taken is already being matched with the photo stored in the chip in the passport, and once that filmsy photo is printed, part of the data matching has been done, and completed.
Mind you, this is all my guesswork and supposition, and I am not in the "team", as in ops/the machine set set up.
Too much of a yapper.