Originally Posted by
hydrogen
Anyone know if the nexus machine accepts passports or only nexus cards?
The NEXUS kiosks entering Canada only accept NEXUS cards. (Or, I suppose, CANPASS Air if you're one of the few people still using that instead of NEXUS.) They also require that CBSA have your iris scans on file.
The Global Entry kiosks for entering the US at Canadian preclearance airports will take a NEXUS card, a passport, or an I-551 card (for US lawful permanent residents).
Global Entry kiosks elsewhere (within the US, or at preclearance locations outside Canada) will only take a passport or I-551.
All Global Entry kiosks require that US CBP have your fingerprints on file.