[LINK] Fwd: Updates on CovidSAFE App

Tue Jun 30 22:57:46 AEST 2020

Two very big and highly improbable ifs. If it works and if it is used.

There is theory, but no evidence it could work, and according to
available numbers, in the month of June, the download rate has been
about 11,500/day

Considering there have been a number of updates and bug fixes, the
number of current versions in the wild is minuscule.

The public lost interest in mid May.

On 30/06/2020 9:00 pm, Roger Clarke wrote:
> G'day Stil
>
> 'COVIDSafe might actually be useful after all' may not be your choice of
> headline, but it's pretty silly:
> https://www.zdnet.com/article/covidsafe-might-actually-be-useful-after-all/
>
> The Currie et al. paper is useful, in its own world:
> https://www.phrp.com.au/wp-content/uploads/2020/06/COVIDApp-Fig1-002.png
>
> I did some prelim modelling back in mid-April, on similar lines:
> http://www.rogerclarke.com/EC/CVM.pdf
> http://www.rogerclarke.com/EC/CVMT.pdf
>
> But the end of the game where we can deliver some value is in ICT.
> And no-one seems to be interested in cold, hard technology assessment.
>
> No-one seems to be interested in conceptual design, critical thought,
> lab experimentation, field testing, metricating the release, assessing
> the results, reporting the results.
>
> Bluetooth RSSI as a proxy for proximity has a superficial attraction,
> and was well worth investigating.
>
> But it's a lemon crossed with a red herring.
>
> The following paper summarised the reasons why COVIDsafe was clearly a
> waste of space, *9 weeks ago*:
>
>     The Effectiveness of Bluetooth Proximity Apps
>     in Tracing People with COVID-19 Exposure Risk
>     http://www.rogerclarke.com/EC/EBPA.html (30 April 2020)
>
> And that builds on and summarises investigative work that had already
> been done by researchers and practitioners.
>
> This one is a polite rendition of what the app may really be about:
>
>     The Many Faces of the COVIDsafe App
>     http://www.rogerclarke.com/EC/CSAF.html (1 May 2020)
>
> And this talks about the professional responsibility to undertake
> technical analysis rather than falling in line with government
> propaganda, as both Pearcey and the ACS signatories did.  (Where oh
> where did critical thinking by ICT professionals disappear to??):
>
>     The COVIDsafe App: A Case Study in Professional Responsibility
>     http://www.rogerclarke.com/EC/CSAI.html (12 May 2020)
>
> For the first month or two in particular, the politicians were far
> better-behaved on a major policy issue than we've seen in years.  But a
> great deal of the ICT community has been hopelessly irresponsible.
>
> Yours in high dudgeon  ...  Roger
>
>
> -------- Forwarded Message --------
> Subject: Re: [LINK] Updates on CovidSAFE App
> Date: Tue, 30 Jun 2020 10:12:25 +0000
> From: Stephen Loosley <stephenloosley at outlook.com>
> To: link at mailman.anu.edu.au <link at mailman.anu.edu.au>
>
> Stil, a long-time linker, this afternoon writes ..
>
>
> COVIDSafe might actually be useful after all
>
> New modelling suggests that Australia's troubled contact tracing app
> could help mitigate the severity of a COVID-19 second wave if problems
> are fixed and more people use it.
>
> By Stilgherrian for The Full Tilt | June 30, 2020 - 16:23 AEST
> https://www.zdnet.com/article/covidsafe-might-actually-be-useful-after-all/
>
>
> COVIDSafe, Australia's coronavirus contact tracing app, may not be
> totally useless, according to modelling released on Tuesday by the Sax
> Institute in Sydney.
>
> The peer-reviewed research (also published today at
> https://www.phrp.com.au/issues/june-2020-volume-30-issue-2/steming-the-flow-how-much-can-the-australian-smartphone-app-help-to-control-covid-19/<https://www.phrp.com.au/issues/june-2020-volume-30-issue-2/stemming-the-flow-how-much-can-the-australian-smartphone-app-help-to-control-covid-19/>)
> shows that it would be "vital" to continue social distancing and
> large-scale testing to avoid a so-called "second wave" of COVID-19
> infections, but also that COVIDSafe "has the potential to be an
> important adjunct".
>
> "Depending on the level of community uptake of the app, it could have a
> significant mitigating effect on a second wave of COVID-19 in
> Australia," they wrote.
>
> The team calibrated their model using actual Australian data up to 16
> May 2020. They modelled five scenarios out to December 31, varying the
> tapering off of social restrictions and testing, and different levels of
> COVIDSafe use.
>
> "In all five scenarios, the modelling projects a second wave of COVID-19
> if the easing of restrictions continues," the researchers wrote. The
> size and timing of the second wave would depend on how quickly
> restrictions are lifted.
>
> "In all scenarios, a high app uptake (61% or 80%) noticeably flattens
> the epidemic curve, giving time for the health system to respond and
> social distancing measures to be promoted," they wrote.
>
> "The COVIDSafe app has the potential to moderate the size of the second
> wave. The effect of the app increases as its uptake increases, to a
> disproportionately greater extent than the increment in uptake."
>
> The researchers looked at a "high level" of app uptake: 61% of the
> population. That's their estimate of the proportion of Australians with
> a smartphone, in the age range likely to use the app (older than 14
> years), and with the technical literacy to download it.
>
> At this level, the number of second-wave COVID-19 cases was reduced by
> between one-third and three-fifths when compared with zero app use,
> depending on the scenario.
>
> At 80% app use, the reduction in cases was more than 70% in three of the
> five scenarios -- although the researchers acknowledge that this is "an
> aspirational level that would require an increase in smartphone ownership".
>
> At a low level of app uptake (27% of smartphone users aged 14 and over,
> the uptake level as of May 20), the number of extra cases was only
> reduced by between one-eighth and one-quarter.
>
> (covidsafe-modelling-table2.png Image: Sax Institute)
>
> As with all models, this research has its limits. It's based on an
> "average disease profile" and on behaviours generalised to the whole
> Australian population.
>
> Age-related effects on behaviours, transmission rates, and app use were
> not included.
>
> "Also, the model does not account for events with low probability and
> large effect, such as simultaneous arrival of a large number of infected
> international travellers," the researchers wrote.
>
> They also acknowledge that there are instances where the app may not
> work and that a "large proportion of the population" must be motivated
> to download and use the app consistently.
>
> So far that's not happening. The number of COVIDSafe downloads flattened
> earlier this month, and usage still sits well below 30%.
>
> "Although the app would have benefits in a second wave of COVID-19, the
> current low incidence of COVID-19 in Australia may create a perception
> that a second wave will not occur, and this may militate against
> preparedness," they wrote, although that was before the latest spike in
> cases in Victoria.
>
> 'THERE'S NO WAY WE'RE SHIFTING' TO THE GOOGLE-APPLE TRACING API
>
> As the Sax Institute researchers note, it still seems "likely" that
> lingering privacy concerns will affect app uptake. COVIDSafe has also
> been plagued by technical problems, mixed messaging, misinformation, and
> a lack of transparency.
>
> Some of the technical and privacy problems could be addressed by
> switching to the new contact tracing API developed jointly by Google and
> Apple -- something that wasn't available when COVIDSafe was developed.
>
> But the Australian government has once more refused to take that path.
>
> "There's no way we're shifting to a platform that will take out the
> contact tracers," said Nick Coatsworth, Australia's deputy Chief Medical
> Officer, on Channel Ten's The Project on Sunday.
>
> "The Apple Google app, it fundamentally changes the locus of control,"
> he said -- although removing centralised control is actually the point.
>
> Internationally, the effectiveness of COVID-19 tracing apps has been
> patchy at best.
>
> France also went its own way rather than using the Google-Apple tech,
> but the resulting StopCovid app has been underwhelming. Less than 2% of
> the French population has activated the app, and a quarter of them have
> subsequently uninstalled it.
>
> The UK dumped its developed efforts after an initial trial.
>
> Meanwhile, Australia's COVIDSafe has yet to identify a new COVID-19 case
> who hasn't already been found using traditional contact tracing methods.
> --
>
>
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-- 

Regards
brd

Bernard Robertson-Dunn
Canberra Australia
email: brd at iimetro.com.au