[NationOfJoe]

I laughed at this, but this joke is probably out of date now.

In Australia, at least, every venue (restaurant, shop, indoor place you spend more then 5 minutes in) has a QR code that links to a form to add your name/email for contact tracing.

I guess the alternative is a book and pen and the front (which places have as backups) but it would be interesting to if all these QR codes everywhere have introduced many security issues or how much easier it actually made contact tracing vs the book.