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Re: COVID-19 contacts tracker (Re: a brief pondering)

Christian <cdel@firsthand.net> Mon, 20 April 2020 15:35 UTC

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Subject: Re: COVID-19 contacts tracker (Re: a brief pondering)
To: Stephane Bortzmeyer <bortzmeyer@nic.fr>
Cc: Rob Sayre <sayrer@gmail.com>, John Wroclawski <jtw@csail.mit.edu>, IETF discussion list <ietf@ietf.org>, Vittorio Bertola <vittorio.bertola=40open-xchange.com@dmarc.ietf.org>
References: <2fa6a8c8-7639-a378-2ff1-3f8697556b66@cisco.com> <24cd67ab-df5a-cc2f-745f-ace19d5325ea@network-heretics.com> <59D332BC-F85E-4744-A3D0-2514551154E8@csail.mit.edu> <4E92D147-3ED1-4109-ACC7-DFA16F1D41C2@gmail.com> <7EEFEEB4-CA51-4FFF-9BAA-857EAEA49FDD@csail.mit.edu> <CAChr6Sxet86chG81qLCGzKCzdJmZZ0L6Duh_hnk+tB5WYfaR0Q@mail.gmail.com> <2137617384.18423.1587048987734@appsuite-gw2.open-xchange.com> <D8F1A0A3-7FAC-4FA3-B119-C0609B731AA2@csail.mit.edu> <CAChr6SykUyCj8MUDddySQSjox+ygHZ3_8M0vof92v-kTq4A8nw@mail.gmail.com> <e4a27626-27e6-077b-ac64-0bad2ea21dc6@firsthand.net> <20200420152032.GA10725@nic.fr>
From: Christian <cdel@firsthand.net>
Message-ID: <c601f27e-f412-8a8a-3d7e-6dfa5654734d@firsthand.net>
Date: Mon, 20 Apr 2020 16:35:34 +0100
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On 20/04/2020 16:20, Stephane Bortzmeyer wrote:
> On Fri, Apr 17, 2020 at 11:16:57AM +0100,
>   Christian <cdel@firsthand.net> wrote
>   a message of 229 lines which said:
>
>> It  persists on surfaces. It can be picked up off a surface and
>> redeposited on another surface. It is not clear if covid-19 is
>> mainly being transmitted due to face to face transmission, or via
>> infected droplets being left on surfaces. Those infections do not
>> reliably fall within the range of bluetooth.
> The PACT protocol, in its specification, mentions the issue and
> suggests a possible solution: a phone (or, actually, any thing that
> has Bluetooth and runs software) left on the surface on sensitive
> places (such as a shop counter), redistributing the IDs it detected.


This has  the feel of tech looking for a solution. If I walk into 2 
railway stations two times a day five days a week. take two trains a 
day.  A supermarket three times a week. open and close a park gate twice 
a day.  How many indirect bluetooth proximity alerts will I receive?

How long will it be after getting possibly thousands of covid infection 
warnings that I decide to turn bluetooth off?  It is not as if there is 
any reliable anti body testing going on. So the only action to take is 
to go into self isolation for another two weeks.

This does this idea improve targeting? It looks more capable of just 
pissing people off.

C

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