Crises are often used by despots to seize power. That's not a conspiracy, that's historical fact. In the United States, we've seen it recently - 9/11 was used to degrade our rights across a large number of issues, and we've never gotten them back.
Implementing systems to track everyone people come into contact with is absolutely a huge invasion of privacy, and obviously not necessary.
> Sometimes, extreme measures are needed.
Extreme times do not justify all extreme measures.
Every time you lose rights or privacy, assume it's permanent. Our government is not suited for repealing law.