When I was looking through my emails, the best way I would describe it—and the memories that were refreshed—is that the airports were clogged with people trying to fill out paper forms. People then had garbage bags full of these paper forms, and they'd have to digitize them so that the information could be passed to the provinces.
You might recall that, at some point, provinces were looking at checking in on people to see if they were okay. They were trying to make sure that they were enforcing mandatory isolation. Initially, it was done on a sampling basis, and then it moved to something more persistent. I think the initial piece at the airport, as well, was complicated because you had all these people getting off an airplane all at the same time, and they were concerned, quite frankly, of a superspreading event happening while they were waiting, doing the paper process.
It was logical to sort of look for some way to capture this information in advance, if possible. There was a web-based version of this, as well, for people who didn't have a mobile app so that we could capture that very simple information, give it to the provinces, and also allow the Public Health Agency of Canada to do the analytics—to say, “This person came from this country. This is what variant that turned out to be, following the testing.” It was much more sophisticated and much more effective than a paper process.