Online Visa or ETA or Electronic Travel Authority. An Electronic Travel Authority ETA is a entry prerequisite for those citizens who do NOT require paper stamp Visa in other words visa waiter nationals going to Canada via Airplance. An Electronic Travel Authority is electronically connected to your Passport. It is a short term Visa for Canada. It is valid for period of five years or until your Passport expires, whichever is sooner. If your passport is lost, stolen or damaged or renewed, then you need to app
