We were given "randomized test kits" to take with us when we crossed the border into Canada.
The instructions were: when we arrive at our destination we were to create an account on line, take the test, then someone would come to our destination to pick the tests up. I told him we were going to be in the middle of nowhere with no internet connection. He smiled and said "do our best".
We didn't do it. No one else in camp got the kits.
There were no covid related questions when we came back to the US.