A short rant about Corona Warn Apps and their abysmal UX.


How is this in any way useful to anybody? This information is not actionable. If I at least got a notice where or when the exposure happened I could adjust my behavior accordingly.

This is just a „you have been naughty in the last 10? days but most likely nothing happened“. Might be triggered by my neighbors phone through the apartment wall or while eating outside at a restaurant.

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Looking at the raw data I can’t even find the key match event. Maybe it’s even a bug? ¯\_(ツ)_/¯

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Just checked again and the raw data has zero key matches. So the App isn’t even correctly showing what is is supposed to show. 🙄

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@map While I agree that the UX could use some improvement, you're seeing the tool and its messaging as something that it actually isn't:
The CWA is not intended to nudge you into a certain behaviour (apart from real risk warnings). It's not supposed to to tell you where you need to keep a larger distance.

Maybe it is a bad decision to still show the low-risk exposure, because it doesn't have anything to do with "being naughty". Could've been an encounter out on the street with 10m distance.

@map after listening to several interviews about the app I was also under the impression that the low/medium/high traffic light system was supposed to be intentionally coarse to not alarm people with stats that aren't actionable. Showing low risk with 1 exposure really undermines that concept.

@map ask any bavarian school kid what the app is good for – it'll tell you the app is the best of all. It made 📱 legal in school.
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