With the electronic travel authority, that's essentially what we're aiming to implement—an electronic record that the individual has permission to travel to Canada, that they have been screened, and that CBSA, through the airlines, will be able to issue board or no-board orders before individuals leave their country of origin, or the point of embarkation for the flight, pushing the risks off.
The individual will not have any indication in their passport, but when they present their passport, scanning that will bring up the ETA approval.