I would also like to know the accuracy of the test they are using. As well as the capacity and protocols of the labs performing the diagnostics. There is the potential for the need to process hundreds per day (and process them correctly and accurately) dependent on flight loads. Forget about seaports. If someone gets a positive, especially after testing before travel (and I would move this up to 72 hours prior to departure), a second test should be offered. I, for one, would demand it. A tracking bracelet? I guess if I had to but what else is it recording besides location/movement? Would need full-disclosure. And it better be waterproof to 100',

The four day quarantine and retesting is going to be the deal breaker for me.