Canada explains who can apply for an ETA Photo Credit: CitImmCanadaSource: TwitterWho needs an eTACitizens of eTA-required countries who arrive in Canada by air must carry a valid eTA alongside a valid passport. Citizens of select visa-required countries may also qualify to apply for an eTA rather than a visitor visa, but only when arriving by air. Anyone from those countries who enters Canada by road or water must still obtain a visitor visa instead. Rules for Canadian citizens and permanent residentsDual Canadian citizens who also hold another nationality must enter Canada using a valid Canadian passport. Canadian permanent residents are exempt from both the eTA and visitor visa requirements, but they must travel with a valid permanent resident card or a permanent resident travel document.