So, you would commit a severe crime to avoid vaccination. Interesting. I know, this is the DR, not the US, etc, etc, etc..
Fake COVID-19 Vaccine Cards Are A Crime, FBI Says
Counterfeit vaccine cards started selling almost immediately after the first COVID-19 vaccines began rolling out and have become popular among anti-vaccine groups.nowthisnews.com
The most common logic would be a QR code which can be made legit via input verification by scanning in a gov website. Shows green it’s good. Red no entry and yellow a single shot taken(could be admitted but segregated from larger groups inside the dwelling).