Gadgets & Gizmos: Dyson's electric mop, musical freezers and the world's largest spherical building

Steve Caplin is dismissive of a robot that can fold laundry – very slowly and possibly needing remote human operation. More impressive is the forthcoming Dyson PencilWash electric floor mop. He is in tune with the Co-op in Sheffield whose freezers are attracting people who like the C#major chord they play. Scientists at Vienna University have created the smallest ever QR code while Microsoft's aim to store data on glass that will last millennia might have a small flaw. Steve explains why some video doorbells don't spot nefarious activity. There's a military-grade smartphone with thermal imaging and night vision. And the world's largest spherical building, modelled on the moon and containing a 4,000-room hotel is being planned. They just aren't sure where to put it. Learn more about your ad choices. Visit podcastchoices.com/adchoices