http://www.newsweek.com/how-get-covid-vaccine-bracelets-that-show-youve-had-your-shot-1592051

People can now wear bands to help prove their COVID-19 vaccination status by purchasing a bracelet.

At least two companies are offering wristbands they say will allow people to demonstrate that they have received a shot—though the method and standards of proof vary and the bands are not endorsed by federal health bodies.