Originally Posted by
username
It seems their mobile phone color-code system is a black-box - you apply and you get your color code to use at checkpoints but no one knows the criteria? I don't know how we can implement anything like that in the US, not to mention globally.
Apple is working with Google to implement a
mobile-phone contact tracing project to determine if you have been in close contact with an infected case. In theory it will be close to what is implemented in China with the color-code system to determine your 'risk' level.