Experts say it’s unlikely an international COVID-19 passport travel system will come about.

They have flagged privacy, inequality, politics, and long-term need as the main problems.

Still, the travel industry is banking on a system to allow international travel to resume.

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COVID-19 passports have been hailed as the key to opening up the global economy, but some privacy and health experts doubt they’ll ever be widely accepted.

Plans to require COVID-19 passports for international travel or even entry to large venues or work offices may fumble, as critics say there’s a wide range of issues – from privacy and inequity, to continuity and longevity – standing in the way. But airlines, which took a trillion-dollar hit because of the pandemic, are banking on

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