And why did they check for scars? Because people were forging their vaccination certificate (like now with COVID). So this mandate thing did not really worked well.
I imagine the scar would be relatively easy to fake with makeup. I always assumed it was just the most obvious way to verify smallpox vaccine status. Did we even have consistent medical records back then?
It's okay if some unvaccinated people manage to cheat the system, as long as the vast majority cannot. Similar to how laws against thievery are useful even though thieves still exist.
And why did they check for scars? Because people were forging their vaccination certificate (like now with COVID). So this mandate thing did not really worked well.