NZ COVID Tracer app for Android and iOS

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#2764979 22-Aug-2021 17:12

Technofreak:

How do they arrive at the number of scans per day and the number of manual entries per day? Especially since you can scan with your phone off line.

I assume there's some system to store stats for upload when network access becomes available again.

Oblivian

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#2764985 22-Aug-2021 17:24

Yarr.. analytic payload when online.

So total offline handsets won't add to stats (or get alerts)

Technofreak

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#2765007 22-Aug-2021 18:16

Oblivian: Yarr.. analytic payload when online.

So total offline handsets won't add to stats (or get alerts)

Which leads to another question. How does the alert system work? Since you data stays on the phone how do they know who to alert? Does everyone get sent the data with the LOI info which is compared on the phone with your data to generate an alert?

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#2765013 22-Aug-2021 18:26

Technofreak:
Oblivian: Yarr.. analytic payload when online.

So total offline handsets won't add to stats (or get alerts)

Which leads to another question. How does the alert system work? Since you data stays on the phone how do they know who to alert? Does everyone get sent the data with the LOI info which is compared on the phone with your data to generate an alert?

The case uploads their diary/bluetooth codes. We broadcast these to all phones, your phone does a check for matches and then alerts you. It is the same method for Bluetooth as GLNs (the GLN comes with a time period too).

If we know the location and the case didn”t necessarily scan, we can still broadcast the GLN and times.

Jon

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#2765019 22-Aug-2021 18:36

jonherries:

The case uploads their diary/bluetooth codes. We broadcast these to all phones, your phone does a check for matches and then alerts you. It is the same method for Bluetooth as GLNs (the GLN comes with a time period too).

If we know the location and the case didn”t necessarily scan, we can still broadcast the GLN and times.

Jon

Thanks, Just as I suspected. Very clever.

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Oblivian

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#2765124 22-Aug-2021 21:37

Did some more basic display of the data to see if it was likely the proactive use shot up

Sure enough. Big spikes once the leak was announced. As we expected

And a taper off again to the same pre-lockdown levels - So presumably there's almost as many scanning nationwide when we're largely only visiting supermarkets.... as there was 2 weeks ago.

Little nuts huh.

Poor tracers.

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#2765125 22-Aug-2021 21:39

Idiots. The lot of non-scanners.

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#2765135 22-Aug-2021 22:01

jonherries:

The case uploads their diary/bluetooth codes. We broadcast these to all phones, your phone does a check for matches and then alerts you. It is the same method for Bluetooth as GLNs (the GLN comes with a time period too).

If we know the location and the case didn”t necessarily scan, we can still broadcast the GLN and times.

Jon

I posted this in the other thread too - but why during this outbreak has there been only one bluetooth key broadcast (on Tuesday evening)? Only one of the 71 cases had bluetooth tracing enabled. Seems extremely unlikely when ~36% of the adult population had it enabled before the outbreak began.

Oblivian

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#2765142 22-Aug-2021 22:20

I was looking for the local data, had a feeling keys exchanged stats were available

But only come across MoH request poll times

https://cdn.geekzone.co.nz/imagessubs/2857e833b79da9f963ef8f1f1f85023b.jpg

It may also be, the persons involved decided not to allow them to send notifications (it would appear reading the docs it needs explicit agreement from person)

Technofreak

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#2765147 22-Aug-2021 22:35

Oblivian:

I was looking for the local data, had a feeling keys exchanged stats were available

But only come across MoH request poll times

https://cdn.geekzone.co.nz/imagessubs/2857e833b79da9f963ef8f1f1f85023b.jpg

It may also be, the persons involved decided not to allow them to send notifications (it would appear reading the docs it needs explicit agreement from person)

Where did you find those?

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Oblivian

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#2765149 22-Aug-2021 22:42

settings-google-Exposure notifications, Menu hamburger - exposure checks

And on pg78. You can find the rules used.

Looks like strength/time. So although it may be polling at say 1500-2700ms. Many of these could be dropped depending on the criteria. I have a feeling somewhere it was a ~2mins timeframe criteria rather than every fleeting phone. But the guys here may be able to elaborate if they're permitted

https://www.health.govt.nz/system/files/documents/pages/pia_-_nz_covid_tracer_-_release_8_210727.pdf

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#2765150 22-Aug-2021 22:44

hi guys from reading the covid thread, scanning is the most important. i get that, scan every qr code you see.

what about bluetooth? is that useful? use that feature is useful?

any other tips?

sorry it sounds dumb but all i've done so far is scan.

Oblivian

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#2765153 22-Aug-2021 22:49

It compliments the data received for timeline generation I believe. (or covers a few more more bases)

But as you can see above, we're trying to work out if it was actually any help with the 1.4M enabled users or not. Going by the pleas. Guessing not as much as hoped.

Technofreak

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#2765155 22-Aug-2021 23:08

Oblivian:

settings-google-Exposure notifications, Menu hamburger - exposure checks

And on pg78. You can find the rules used.

Looks like strength/time. So although it may be polling at say 1500-2700ms. Many of these could be dropped depending on the criteria. I have a feeling somewhere it was a ~2mins timeframe criteria rather than every fleeting phone. But the guys here may be able to elaborate if they're permitted

https://www.health.govt.nz/system/files/documents/pages/pia_-_nz_covid_tracer_-_release_8_210727.pdf

Nope don't see it. No reference to Google Exposure Notifications and no hamburger menu. All I have under Settings (Settings and Support) is "Notification preferences". Running V6.0.0

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Oblivian

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#2765156 22-Aug-2021 23:13

Try searching for Covid-19 in your settings search then.

It's it's own google addins management area. (not 'google' helper settings)

Or your device may not support it? (force update play services perhaps)

https://cdn.geekzone.co.nz/imagessubs/6f1413be7e76a81e2ba874edc74952e4.jpg

Or your model + covid eni in dr google

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