The real world.

Fake, substandard vaccines and medicines spell trouble for controlling Covid-19

https://www.statnews.com/2021/10/25/counterfe...-covid-19/

Beware of Fraudulent Coronavirus Tests, Vaccines and Treatments

https://www.fda.gov/consumers/consumer-update...treatments

Fake Vaccine Cards May Become Employers’ Next New Headache: 5 Steps to Protect Your Company

https://www.fisherphillips.com/news-insights/...dache.html

Two possible real world solutions

QMC's Vac-chek

and

QMC's quantum dot tags and blockchain anti-counterfeiting technology.