US Patent 11423755 System and method for a digital proof of vaccine

A system and method for certification and distancing display on a user-worn badge device for infection prevention. In one embodiment, the system and method entails uploading a decrypted health token from the at least first user-networked device for displaying the “clean” health certification in a form of a color and/or symbol code on the at least first user-worn badge device; and uploading a pre-defined distancing rules for displaying at least one of color/symbol/audio-coded warning of registering presence at least a second user-worn badge device within a threshold distance of the first user-worn badge device based on the pre-defined distancing rule.