The real world. Fake, substandard vaccines and medicines spell trouble for controlling Covid-19 https://www.statnews.com/2021/10/25/counterfeit-vaccines-medicines-spell-trouble-controlling-covid-19/ Beware of Fraudulent Coronavirus Tests, Vaccines and Treatments https://www.fda.gov/consumers/consumer-updates/beware-fraudulent-coronavirus-tests-vaccines-and-treatments Fake Vaccine Cards May Become Employers’ Next New Headache: 5 Steps to Protect Your Company https://www.fisherphillips.com/news-insights/fake-vaccine-cards-employers-headache.html Fake Vaccine Card Sales Have Skyrocketed Since Biden Mandate https://www.pewtrusts.org/en/research-and-analysis/blogs/stateline/2021/09/16/fake-vaccine-card-sales-have-skyrocketed-since-biden-mandate Two possible real world solutions QMC's Vac-chek and QMC's quantum dot tags and blockchain anti-counterfeiting technology.