The bloke has been arrested and faces two counts of "obstructing operations carried out relative to COVID-19 under the Emergency Management Act", the South Australia Police said.

But his arrest might be one of many as other anti-vax campaigners are doing the same thing.

The Aussie coppers have warned that any person found to be tampering or obstructing with business QR codes will likely face arrest and a court penalty of up to $10,000.

The police said no personal data was breached, but the incident highlights that truly all an attacker needs is a printer and a pack of Avery labels to do real damage.

The QR codes were being used by the South Australian government's official CovidSafe app to access a device's camera, scan the code and collect real-time location data to be used for contact tracing in case of a COVID-19 outbreak, ABC News Australia reported.

In this case, the QR codes were being used by the South Australian government's official CovidSafe app to access a device's camera, scan the code and collect real-time location data to be used for contact tracing in case of a COVID-19 outbreak, ABC News Australia reported. That's a lot of personal data linked to a single QR code just waiting to be stolen.

In this instance, people who scanned the illegitimate QR code were redirected to a website distributing misinformation from the anti-vaxxer community which is bad enough, but there was a lot more just waiting to be stolen.