The opening paragraph of the article describes what is actually happening and it's far less ominous that what the comments here suggest.
"In an official statement, the State Government announced a contract to a Western Australian (WA) company for $1.1 million to develop a new smartphone app that uses facial recognition and GPS tracking technology to monitor people who are ordered to self-quarantine at home, reported InDaily."
So this isn't an app meant to enforce state-wide quarantines or to enforce any additional restrictions or controls on the general public. This app is to enable those who are specifically ordered to self-quarantine (e.g. arriving from a Covid-hotspot, or close contacts of Covid-positive cases) to be able to check-in so that they can self-quarantine at home instead of at a managed isolation facility.
"In an official statement, the State Government announced a contract to a Western Australian (WA) company for $1.1 million to develop a new smartphone app that uses facial recognition and GPS tracking technology to monitor people who are ordered to self-quarantine at home, reported InDaily."
So this isn't an app meant to enforce state-wide quarantines or to enforce any additional restrictions or controls on the general public. This app is to enable those who are specifically ordered to self-quarantine (e.g. arriving from a Covid-hotspot, or close contacts of Covid-positive cases) to be able to check-in so that they can self-quarantine at home instead of at a managed isolation facility.