Tatiana Bazzichelli on Thu, 5 Sep 2019 12:44:15 +0200 (CEST)

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Re: <nettime> Flying in Berlin's Sky, an Afternoon Investigation - September 22


Anyway...I am having a private conversation with Emmanuel on this, and
he is happy to share his thoughts with you (see below).
Here is his answer - hopefully you will get in contact directly with
each other ;) - or at the workshop for the people that will join.



ADS-B information is filtered by most websites. They don't show a high
proportion of military and private planes. That's a fact which not
really up for debate because it's very well documented.

Regarding the proportion of planes that are blocked, Oxford researchers
specialised in ADS-B and privacy did the study. They used actual data
and you can view their methodology in their paper. See also table 7 here:

You could also look at the Flightradar24 website itself, which explains
that if you have a private aircraft you can make it non-visible on their

As I mentioned, every website apart from ADSB-Exchange does this blocking.
There's all kinds of arguments for this, such as privacy and security.
The FAA is even planning to implement a rule to make it impossible for
hobbyists to identify specific aircrafts. It's mentioned in the paper I
linked above and this page:

You could also look up more information regarding the FAA ASID / Barr
list. it's a list of aircrafts which have requested the FAA to forbid
ADS-B websites (FR24, etc) from showing. This is in addition to all US
aircrafts: https://nbaa.org/aircraft-operations/security/asdi/

I've done a FOIA to get this list recently, and there's over 25,000
planes in it, that doesn't include the military ones. See my FOIA here:

I'd be more than happy to discuss this further during the workshop. If
anyone still have doubts, you could even compare "live" the data we get
from our antenna vs what you see on the websites.


Tatiana Bazzichelli // Artistic Director
Disruption Network Lab
Twitter: @disruptberlin // @t_bazz
PGP: disruptionlab.org/pgp
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