Exciting news for those enough who are 40+ and spend too much time in front of a computer screen: a Finnish startup called IXI is promising to end the era of clunky bifocals and the ‘head-tilt’ struggle of progressive lenses, replacing them with a pair of glasses that focus as naturally as the human eye using a combination of infrared eye tracking and liquid crystal-transparent indium tin oxide glasses



Bold assumption on my part here, but why would the manufacturer of such a juicy target for tracking not make it with connectivity? Something like this would be monetized and milked for advertising and subscription revenue on principle alone. Eye tracking technology that determines vision clarity based on where the user looks is but a small skip and a jump from advertising based on where the user looks.
ETA: Per the first line of the article, the company is backed by Amazon.
Future versions won’t focus properly unless you look at an Amazon ad for 60 seconds. No closing your eyes or looking away. The glasses can tell if you’re paying attention.