covid-19December 10, 2020 Paper beats app: Vaccine verification will likely be proven offline. Here’s why. The realities of medical records, privacy concerns and the virus itself mean efforts to build vaccine passport apps are unlikely to succeed in the coming months. Related posts U.K.'s Johnson launches mass testing…Do you need a Covid-19…What's behind workers' hesitation to…Fully vaccinated people can travel…Younger Latino men are Covid's…Salmonella infections in eight states…Salmonella infections in eight states…The U.S. isn't losing to…Virus-killing robot tested for use…In Covid fight, Cuba touts…