Home » BBC News - Technology » technology news » NHS Covid-19 app: How England and Wales' contact-tracing service works NHS Covid-19 app: How England and Wales' contact-tracing service works Unknown 9:37 AM BBC News - Technology technology news The app will tell you to self-isolate or be tested or warn of an elevated local risk level. from BBC News - Technology https://ift.tt/2HgMxmH Share: Facebook Twitter Google+ StumbleUpon Digg Delicious LinkedIn Reddit Technorati