France had one of the most restrictive laws during the pandemic. Long before vaccine passports were available, people had to fill out, sign, and carry certificates when they left their homes. In addition, while PDF was the electronic file format available by default, the government was using a basic, outdated version of it. The experience has gradually improved over time, but people often had to navigate between paper and electronic documents before QR codes and apps. This presentation will look at how different countries have used PDF during the pandemic. We’ll see how the combination of a better understanding of the PDF features and easy-to-use solutions for all devices accelerated digital transition.