I suggest people actually read the paper itself (I linked it earlier). The goal of the work goes well beyond just finding an alternative mask-fit testing method. It seeks to link mask fit with user behavior and environmental conditions - to find out why/when people use masks incorrectly and give them a real time, ambulatory feedback. That's not possible using currently existing methods.
derpPhysics t1_j5iisgm wrote
Reply to Seattle-based Jetoptera is developing a vertical takeoff aircraft that can travel at almost 1,000 km/h with a radically simplified new type of engine. With almost no moving parts, it uses super-compressed air to create vortexes for thrust. by lughnasadh
Hmmm I remember seeing a scam company with this idea a while back... pretty sure this is some form of fraud once again.