When you apply, you have to answer every question truthfully, hand over your visa and the documents an officer reasonably asks for, and show up when you are called in. A foreign national can also be required to give fingerprints and a photo, take a medical exam, and sit for an interview with Canada's intelligence service.
(1)A person who makes an application must answer truthfully all questions put to them for the purpose of the examination and must produce a visa and all relevant evidence and documents that the officer reasonably requires.
(1.1)A person who makes an application must, on request of an officer, appear for an examination.
(2.1)A foreign national who makes an application must, on request of an officer, appear for an interview for the purpose of an investigation conducted by the Canadian Security Intelligence Service under section 15 of the Canadian Security Intelligence Service Act for the purpose of providing advice or information to the Minister under section 14 of that Act and must answer truthfully all questions put to them during the interview.
(3)An officer may require or obtain from a permanent resident or a foreign national who is arrested, detained, subject to an examination or subject to a removal order, any evidence — photographic, fingerprint or otherwise — that may be used to establish their identity or compliance with this Act.