Source? Most of these systems didn't disclose location.

In Germany police went around and even looked at contact tracing lists (on paper) in restaurants [1]. Even while politicians still stated publicly that these lists were only used (or to be used) for contact tracing.

[1]: https://www.golem.de/news/hamburg-polizei-nutzt-corona-konta...

Also the partly state sponsored luca app (check in in locations, festivals, restaurants, concerts) that is privately developed (and riddled with security holes) is already in discussion to use the data on the people to better target them for concert tickets and the like [2].

[2]: https://www.ccc.de/de/updates/2021/luca-app-ccc-fordert-bund...

So we see this data is already in abuse by the state and also by state sponsored private entities.

I believe, that this data, once collected, will only be (ab)used further in the future. In my experience it will be as with all data caches - somebody wants to create additional value from it.

Singapore:

https://fortune.com/2021/02/01/singapore-covid-data-tracetog...

https://www.straitstimes.com/singapore/politics/police-can-a...

https://www.straitstimes.com/singapore/proposed-restrictions...

https://www.straitstimes.com/singapore/politics/bill-limitin...

(Note that one mostly-united political party controls 89.2% of Singapore's legislature seats, and can pass any laws or amend its constitution to their liking.)

Do you have sources for this ?

Australia, WA, check-in data: https://www.abc.net.au/news/2021-06-15/safewa-app-sparks-urg...

Australia, WA, border pass data: https://www.abc.net.au/news/2021-06-17/g2g-app-data-accessed...

Australia, VIC, check-in data: https://www.theage.com.au/politics/victoria/police-sought-ac...

Australia, QLD, check-in data: https://www.abc.net.au/news/2021-06-29/queensland-coronaviru...

See my answer to your sister comment from @optimiz3

In Germany police requested contact tracing lists from restaurants in investigations.

Thank you, it clearly shows that the German government cannot be trusted to do the right thing.

And the underlying desire for having this information will no doubt prolong the Corona restrictions longer than necessary, which is certainly not in the interest of German citizens.

> German government cannot be trusted to do the right thing

Oh dear, one thing we could definitely state that German government is absolutely could be trusted to do the right thing