South Australia has begun a home-based quarantine trial which is tipped to expand to international arrivals.
It will start this week for people returning from New South Wales and Victoria.
Premier Steven Marshall said he hoped the trial would be expanded to international travellers in "subsequent weeks", making it a national first.
Those in home-based quarantine will need to download an app, developed by the South Australian Government, to prove they are staying home while required to. The app uses geo-location and facial recognition software to track those in quarantine.