"Europe's data protection watchdog has called for a single coronavirus app to be used across the EU, instead of every country making its own."
“Several countries are developing tracking apps, but privacy advocates warn of the dangers they might pose.
The European Data Protection Supervisor says a single EU app with strong data protection built in is the best solution to the coronavirus pandemic.
“We will not be able to solve it with national tools only,” he warned.”
Coronavirus: Call for single EU tracking app with data protection (BBC News, link)