It's a lovely expensive waste of time, that's for sure.
I don't have Bluetooth on unless I'm using it, so it won't detect me at all.
If you walk past someone's phone, presumably that counts as "contact", rather than any actual physical contact.
The people who aren't running it but have BT on are just going to be BT MAC addresses, you can't do anything about tracing them really.
Then, if it works, you can tell a lot of people - those who are voluntarily walking around with BT on, the app enabled, etc. - to go into lockdown, and they can just ignore you anyway.
I honestly don't see what we're trying to achieve here. One guy walks through town with the app (showing he's quite diligent anyway, presumably), days later discovers he had the virus, then we have to inform hundreds of people (also likely the ones diligently distancing) that they might have it, and they can't go to work.
Just... continue lockdown.
Biting the hand that feeds IT
