Norway has had to pause use of its app, pending a review Norway's health authority has had to delete all data gathered via its Covid-19 contact-tracing ... design backed by Apple and Google ...

But the US tech firms face criticism for their prescriptive ... Coronavirus contact tracing: My new skill How does contact tracing work and is my data safe? Apple and Google release marks ...

For one, Apple and Google are teaming up to build a contact-tracing feature for their phones, which would use Bluetooth to track physical proximity between phones and, hence, their users.