Ignore the 'limitations' part.
“Warning to Organizations Planning To Demand COVID Vaccination Certificates”
https://docs.google.com/document/d/e/2PACX-1vTGXzu68SeFuqyA7DsSoetBJbC4Xodj-4UFDkMDACU3uhfXKHKqsB-pRpWrb5GO6rekf2lYD4q9iY—/pub?urp=gmail_link&gxids=7628