California launches digital vaccine verification system but says it will not be mandatory

A man holds his vaccination reminder card after having received his first shot at a pop-up vaccination site next to Maximo Gomez Park, also known as Domino Park, Monday, May 3, 2021, in the Little Havana neighborhood of Miami
Wilfredo Lee/AP
California launched a digital vaccine verification system.
The state just reopened, so businesses can use the system to enforce rules to protect against COVID-19.
New York state has a similar program, called the Excelsior Pass.
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