How did the Covidsafe app go from being vital to almost irrelevant?

The PM told Australians in April the contact tracing app was key to getting back to normal but just one person has been identified using its data

It was sold as the key to unlocking restrictions - like sunscreen to protect Australians from Covid-19 - but as the country begins to open up, the role of the Covidsafe app in the recovery seems to have dropped to marginal at best.

This is an important protection for a Covid-safe Australia," the prime minister, Scott Morrison, said in late April. I would liken it to the fact that if you want to go outside when the sun is shining, you have got to put sunscreen on."