If I felt that it was keeping Canadians safe, I would certainly be on board. I don't see the evidence that it was keeping Canadians safe when we were in a community spread situation.
However, I think it's also presumptuous of us to assume that everyone has a smart phone. If my mother was trying to cross the border, she would be unable to, because she doesn't have a smart phone. We had motorcoaches full of seniors who did not even approach the border because that was the case for them as well.