Originally Posted by
seawolf
CBP (US customs) never used iris scanners. US NEXUS kiosk takes your photo and does its facial recognition. So kiosk requires you hitting a "take photo" button on touchscreen while others just automatically take when you are near it.
CBSA kiosk requires NEXUS card for activiation.
Everytime i used head to the US via YYZ, I stuck my face in some retinal scanner/camera and it popped out a card to show to the agent.