What is the eTA for Canada?
The Electronic Travel Authorization (eTA) is for the exception of visa requirements for foreign nationals traveling into the territories of Canada, this authentication is required for the travelers going via air. An eTA Canada is electronically linked by the traveler's passport. The validity of the eTA, normally eTA for five until your passport should not expire during this time. If your passport expires during the five years’ time, you need to get a new eTA Canada to travel in Canada.