Those QR codes are much safer on paper, secured well, than any digital medium that can be hacked. The cloud is a dumb place to store secrets, as anyone on the

Those QR codes are much safer on paper, secured well, than any digital medium that can be hacked. The cloud is a dumb place to store secrets, as anyone on the planet can attack your secret storage. Almost any offline medium (including a Post-It stuck to your monitor on your desk!) is inherently safer.