From what I've read on other posts about bags (and skipping bag lines), I think this would be considered a bag. IMO, it's no different than a man's wallet, or wallets in general. But I think the fact that it can hold a few things, and is on a lanyard, will qualify it as a bag. That's what's happened to others that I've read here. I'd love to hear from people who've used them --- I have one of these myself.