The COVIDSafe app has been given a massive update, and with it comes the hope that it'll give contact tracers vital information when tracking down COVID positive cases.

However experts have criticised the update not using technology developed by Apple and Google.

Since the app was first launched in April, it has been used successfully several times to find people who otherwise might have been missed by human contact tracers, but overall hasn't been of much use.

So on today's Coronacast, will the updates help make the app work better this time round?

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James Purtill, ABC technology reporter, ABC Science Unit