I'm 50% disappointed that this wasn't about actually learning to see around physical corners, and 50% embarrassed that for a fraction of a second I thought this was going to be about learning to see around physical corners...
Kate also has some videos with the technical details.
An object around the corner will have a minute but detectable effect on the light adjacent the corner.
Yes, this is the same Kate Boumann of black-hole-imaging fame.
https://www.technologyreview.com/s/603314/new-camera-can-see...