How to Leak Data From an Air Gapped Computer to a Nearby Smartphone

Casper is a new technology that lets you leak data from an air gapped computer to a nearby smartphone. The phone could be up to 1.5 meters away, so it's not very far. But they're getting it at 20 bits per second and would take 306 minutes to extract 46 kilobytes of data. So keep at it, lads.