DRM-114 is going to be an async serial SAO for Defcon 2019. It'll be designed to go with the Dumb Badge, but it's conceivable that not everyone will be able to get ahold of one of those (there are a lot of folks at DEFCON). So plan B is this - it's the Fake Badge and it allows you to bridge the async serial port of an SAO v1.69bis to USB.