https://techcrunch.com/2020/03/18/israel-passes-emergency-law-to-use-mobile-data-for-covid-19-contact-tracing/

Israel has passed an emergency law to use mobile phone data for tracking people infected with COVID-19 including to identify and quarantine others they have come into contact with and may have infected.

The BBC reports that the emergency law was passed during an overnight sitting of the cabinet, bypassing parliamentary approval.