Cathay Pacific Airways, convinced that digital proof of coronavirus vaccination will bring about the return of safe international travel, asked its pilots and crew to try out a new mobile app that showed their vaccination status on a recent flight from Hong Kong to Los Angeles.

New York has rolled out ¡°Excelsior Pass,¡± billed by the state as ¡°a free, fast and secure way to present digital proof of COVID-19 vaccination¡± in case reopening sports and entertainment venues require proof of attendees¡¯ status.

And Walmart, the largest private employer in the U.S., is offering electronic verification apps to patients vaccinated in its stores so they ¡°can easily access their vaccine status as needed,¡± the company says.