Foldability is all the hype in the drone world these days, as is the case with the GoPro Karma and the DJI Mavic. But before these two were announced, we already heard about Zero Zero Robotics' Hover Camera 4K drone that is truly foldable and also fully enclosed -- in the sense that you can grab hold it any way you want without getting cut by the propellers, plus you're less likely to cause havoc in a room. Today, we bring you the good news that this nifty little machine -- under the new name "Passport" -- is finally launching for 549. For those who aren't already familiar, the Passport is an ultra-lightweight and ultra-compact quadcopter powered by Qualcomm's Snapdragon Flight platform. It comes with a 13-megapixel still camera that can shoot 4K video, and there's a foldable carbon-fiber enclosure for the propellers -- the drone is about the size of a VHS cassette tape when folded, if you know what that is.