This is one of the least reassuring quotes regarding #COVID19 vaccination "passports" and tracing -

"Rest assured, the nerds are on it," said Brian Behlendorf of The Linux Foundation.

https://www.cnn.com/2020/12/27/tech/coronavirus-vaccine-passport-apps/index.html

1. Demand #privacy or else.
2. Paper options must be available.
3. We are not required to trust #tech companies to maintain our privacy - especially those connected to a government.
4. This is easily solved with a printed QR code "receipt" from the office where vaccinations occur.