Guess you're not following the news. Things that look simple can be deceiving.
>It did seek to assuage fears, however, by repeatedly assuring Singaporeans that the data collected with such technology would be used only for contact tracing during the pandemic. And that’s where things went wrong.
>Earlier this month, it emerged that the government’s claim was false. The Ministry of Home Affairs confirmed that data could actually be accessed by the police for criminal investigations; the day after this admission, a minister revealed that such data had, in fact, already been used in a murder investigation.
https://www.technologyreview.com/2021/01/11/1016004/singapor...