All progressing nicely I see remind me again when was this all to have been up and running by ?
It's looking like late summer/ready for autumn/winter for track and trace, app, answers on whether a vaccine may be promising, other tech solutions coming on stream.
If the centralised approach does distance calculation through RSSI or some other means better, this needs to be communicated by the government (although I'm sceptical about the claims). It's looking more like an app that works well is technically far too difficult to write in real life timescales and it'd only give you contact/handshake information, which would only be useful in a setting like a university or a pub. And even then, very walking around in the dark.