The Sunday Times tech correspondent Danny Fortson brings on Steve Sinclair, product head at Mojo Vision, to talk about "smart" contact lenses (2:00), why glasses are harder (4:00), working on this for ten years (7:30), gambling as a killer app (10:00), the possibilities of “invisible computing” (14:00), uses in conjunction with brain-computer interface tech (17:00), raising $159 million (20:40), how it works (23:10), the movement toward less screen time (28:20), the military applications (30:10), why now (32:50), and what else needs to be figured out (37:00).