https://en.wikipedia.org/wiki/COVID-19_apps#List_of_apps_by_country
Brought to you by Big Tech and other leftist/liberal types. Persons B through G in the above graphic would be required to get a test and/or self quarantine? If you didn't do so, would they send someone round to pay you a visit? Persons H and I would just get a warning and advice on social distancing. Don't worry, it will be totally private and would never be used improperly by leftists. Conservatives warned about the Patriot Act being used against citizens. It was used against a citizen running for president plus a few members of his team. I think I'll watch Enemy of the State tonight.
This will be used to falsely identify person J, who is not in the diagram. That is the target. Person J will deny contact with person A. He will resist the removal of his liberties and taken into custody against his will. Associations between person J and others will be made. Then stories will be concocted to show person J and others were working against the state. The later has nothing to do with COVID-19. It is just a context to investigate, associate and lie.
All of this when there isn't a problem. It is a hoax to begin with.