We definitely have voting machines [0] that started being trialed back in 2007, and more widely in recent years.

The process I experienced last time I voted in local elections was you validated where you lived and were given a one use barcode/qrcode (can't remember) which you scanned at the machine, made your selections and dropped the barcode paper in specific bins.

[0] https://www.aph.gov.au/About_Parliament/Parliamentary_Depart...