The Depression-Era TV of Tomorrow Had Home Shopping--And a Like Button

TV advertisers imagine that one day soon you might see a product on screen -- say Don Draper's whiskey glass or Daenerys Targaryen's dress--and pause the program, click on the product and then instantly purchase it. Relatively primitive versions of this technology already exist, but the idea is far from new. Long before most people had even seen a TV set, this type of instant-purchase tech for television was already being imagined in the "radio" of the future. A radio set that also included TV w...