That's a pretty broad question.
If you're contemplating somebody flying into Pearson airport, there will be a number of different ways they will come in. They may do an advanced declaration or they may present themselves at a kiosk. On the way out of the kiosk, they will present themselves to a border services officer, so, yes, there will be an interaction with a person.
For somebody claiming asylum at a port of entry, 100% of them will spend a considerable amount of time with a border services officer to do that initial risk assessment.