Originally Posted by
ridefar
And to clarify OSS is not located where the posters right above indicate. It is at the top of the escalators and to the left; entered from the main hall. If you go into the area with the escalators you have gone too far. If you go down the escalators and through the doors and see Nexus machines you have really gone too far.
What signs are there for OSS? The area just before the escalators down to the Immigration main hall has a number of signs for a confluence of passengers - presumably OSS is for those connecting to flights in Canada (D gates)?