за 3 недели до открытия американской границы, прежде всего эти коды наказали проверять малым бизнесам - ресторанам, фитнесс-залам и т.д.

When can I download my QR code?

On Friday, those born in the months of January through April can download their QR codes on the provincial site. On Saturday, those born in May to August can follow suit. And on Sunday, fall and winter babies born September to December are able to download their QR code.

https://covid-19.ontario.ca/get-proof/