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Given a passage and a query based on the passage, generate an unambiguous, concise and simple answer to the query from information in the passage. Note that the answer may not be present in exact form.

The application process for an eTA became available as of August 1, 2015. On March 15, 2016, this entry requirement will become mandatory and travelers will need an eTA before they can board a flight to Canada. To make sure that you can board your flight to Canada, you will need to travel with the passport you used to apply for your ETA as the ETA is electronically linked to it. If in doubt, you can always check the status of your ETA on Canada.ca/eTA. To find out more, including who needs an ETA and who doesn´t, visit Canada.ca/eTA. See you in Canada! Your Sri Lanka ETA visa will allow you to enter Sri Lanka not later than 3months time from the date of grant. Sri Lanka ETA visa is valid for three months only. T echnical difficulties have hampered applications for new electronic permits that are required for British visitors to Canada. From March 15, visa-exempt travellers, including British visitors, will need to secure an Electronic Travel Authorisation (eTA) to fly to, or transit through, the country. All non-citizens require a Visa or electronic Travel Authorization to enter Canada. Apply Online New entry requirements for Canada: Starting March 15, 2016, all travellers who fly to or transit through Canada need an Electronic Travel Authorization (eTA). 1. Submit Application Online Citizens from countries other than the United States (U.S.) who do not need a visa to enter Canada will need to obtain an eTA before flying to Canada. Travellers do not need an eTA when entering Canada by land or sea. How do I apply for an eTA for travel to Canada? Applying for an eTA is a simple online process that takes just a few minutes. You need your passport, a credit card (Visa, MasterCard) and an email address. Apply for an eTA before you book your flight to Canada. Most applicants get approved within minutes. However, some applications can take several days to process so don’t wait until the last minute. Canada eTA Electronic Travel Authorization (eTA), to Canada Our agency allows to obtain your Canada ETA, application to travel to Canada less than 72 hours before. The form corresponding to the admission procedure must be completed online before traveling to Canada. In addition to an FBI clearance for Canadian immigration, Americans who have lived in another country for more than six months when older than 18 years of age may also need a criminal record check from that country. Citizens of the following countries require an eTA to get into Canada by air: Andorra, Anguilla, Australia, Austria, Bahamas, Barbados, Belgium, Bermuda, Brunei, Chile, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Israel, Italy, Japan, South Korea, Latvia, Liechtenstein, Lithuania, ... Find out how to apply and why you need a passport and not an eTA for travel to or through Canada. Check your eTA status Get online updates on pending applications, as well as information on the status of your current eTA. Query: how long does it take to obtain an eta for canada
Output:
Canada ETA, application to travel to Canada less than 72 hours before.