"Chinese President Xi Jinping has called for a "global mechanism" that would use QR codes to open up international travel.<p>"We need to further harmonise policies and standards and establish 'fast tracks' to facilitate the orderly flow of people," he said.<p>"The codes will be used to help establish a traveller's health status."<p>Yikes, what could possibly go wrong here?<p>That's a resounding no from me.