Coronavirus: German contact-tracing app takes different path to NHS

Germany’s Covid-19 contact-tracing app will only alert users if they test positive for the virus, Chancellor Angela Merkel has confirmed. The comments contrast with the UK’s NHS app, which uses self-diagnosing questionnaires and which privacy campaigners say is overly centralised. The decentralised German model aims to offer a more anonymous process by holding data on individual smart-phones rather than on a remote server.