A Temporary Resident Visa (TRV), also referred to as a visitor visa, is an official document issued by a Canadian visa office that is placed in your passport to show that you have met the requirements for admission to Canada as a temporary resident (either as a visitor, a student, or a worker).
i. Electronic Travel Authorization (eTA) - An Electronic Travel Authorization (eTA) is an entry requirement for visa-exempt foreign nationals travelling to Canada by air. An eTA is electronically linked to a traveler’s passport. When you arrive, a border services officer will ask to see your passport and other documents – for example, a U.S. Green Card. Citizens of certain countries are exempt from the requirement to obtain a Temporary Resident Visa (TRV). For these individuals, the government of Canada has introduced what is known as electronic Travel Authorization (eTA).