Until you think about people that have devices that don't use headphone ports, or don't have bluetooth on their phones (both, IIRC, are very small counts, but p

Until you think about people that have devices that don't use headphone ports, or don't have bluetooth on their phones (both, IIRC, are very small counts, but potentially a problem). Not to mention if you're sharing headsets that, unless they're all coming in plastic bags suggesting that they're new from the factory, everyone else's germs are all over them.