No problems at all. I had my 'pin pack' that has pins mounted on the 'pages' and I also have my lanyard and usually a couple of small sandwich bags full of loose trader pins. I'm sure it looks funny on the x-ray but never had any glances at them. I finally had a bag check done leaving MCO one time. My back pack has all my camera stuff, lenses, flash, memory BATTERIES galore, cables and wires that were all nice and wrapped up, but had slid to the bottom of the backpack and I think looked a little wierd, so they checked it out.