Daily Tech Observations 9

Tracing Apps Overview

About 35 countries released apps in the COVID-19 context, roughly half of them actually perform some kind of tracing or tracking using either GPS, Bluetooth or both. I reviewed some of them with the information that you find in the Google Play Store in regards of rating, no. of installations and permissions. I could not find any app that has a penetration of more than 5% (Android only), rather lower, and the success of such an app grows with the userbase.

Random samples:
(Numbers for Android apps only, Apple is not releasing the number of installations)

  • Stopp Corona (Austria), ~9.000.000 population and 100.000+ downloads
  • eRouška (Czech Republic), ~11.000.000 population and 100.000+ downloads
  • Aarogya Setu (India), ~1.300.000.000 population and 50.000.000+ downloads

Reference: Population by Worldbank

I noticed some apps are very generous with permissions, also asking for identity, phone number, contact list, all on top of GPS and Bluetooth.

Tracing Apps Details

Thanks to AppBrain you can get more information about individual apps. You can see the underlying libraries used and communication channel. It seems most of the apps make use of Google Firebase Messaging for the push part.

Sample: Dev libs for Stopp Corona (Austria)

Here as sample the details for the Stopp Corona App from Austria taken from the respective AppBrain page. We can see GCM (now Firebase) for messaging, the cryptographic lib Bouncy Castle, the JSON lib MOSHI.
At least none of the apps I have looked at so far, use social or Ad network libraries.

German Tracing App Status

While other countries have a headstart, Germany is falling behind. Despite news stating German Telekom and SAP joining the initiative, there seems to be no schedule, commitment and definitely no budget yet. I fear this will become a humongous project with 90% consultancy. We have existing open source applications following DP-3T as guidance, a small team of less than 15 people can produce an app in short time, and still comply with GDPR and security in place. My take.

COVID-19 Data

Latest Google Community Report was released on May 1st.

Stay safe and tuned.

Image by Free-Photos from Pixabay

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