https://www.wusa9.com/article/entertainment/television/programs/q-and-a/vaccination-passports-could-be-required-as-soon-as-the-summer/65-446c5f24-c808-42c0-9f8d-df197e079c74
http://Yahoo! Finance: https://finance.yahoo.com/news/covid-vaccine-verification-electronic-secure-134700314.html
https://www.biometricupdate.com/202012/itoco-and-world-health-access-launch-biometric-ids-for-vaccination-verification
https://www.narcity.com/en-us/news/covid19-vaccine-passports-may-be-required-if-you-wish-to-travel-the-world-in-2021
https://apnews.com/press-release/pr-newswire/technology-business-public-health-corporate-news-diseases-and-conditions-6536c6ec20cb2d0efce186e3f20ca9ad
http://Markets Insider: https://markets.businessinsider.com/news/stocks/covid-vaccine-verification-electronic-and-secure-through-first-ever-patented-vax-passbook-and-passcard-technology-1029893993
http://MorningStar: https://www.morningstar.com/news/pr-newswire/20201215cl23557/covid-vaccine-verification-electronic-and-secure-through-first-ever-patented-vax-passbook-and-passcard-technology