Okay, this morning I explain to my boss that I can't send it the paperwork for a Brazilian visa until I get back from Canada next week. He commented that I need to get an auxiliary passport; which he said is a second passport that I use while my primary passport is in sent in to get visa's processed.

Besides being a little upset that he isn't planning on me being home long enough to get the paperwork ready for my next trip, I was confused as I'd never heard of an auxiliary passport.

Does anyone have one of these or know how they work?