First , are u travelling to canada from countries do NEED visa , or do you have sticker visa from Canadian Embassy ? . plus they need to know who you are , if u are wanted or they will run check on you , if you are coming from safe country , your chances is low , to see the streets of canada , only of u do u have very strong case and on the media , plus if u get taken to detantion center till they verf you , they need your Ids , it dosnt matter how long the keep in till they find out who you are , and after that u will see IRB or judge at detention center , and if they decide postive to stay , u need some one to bail you out , or candian citizen or some one related to u , if not u will complicate ur case , you need to verf , whats your country so we can , other than that if u come from ertiria, iraq , syria or warzone country , or trangender or lesbian or gay from Russia , or saudi thats strong , other than that , im sure some other they tell u . Canada is great country and very secure they dont let any one in, u need to be genuine , other wise dont waste ur time .