Look around. There's a good chance you'll spot a tablet computer, if you don't have one yourself. Touch-screen phones are even more common. Biometric scanners scan your fingerprints at your bank, or your irises at the airport. They're devices that used to be the stuff of science fiction — the sort of thing you'd see in Star Trek or Blade Runner or Minority Report. Now they're here in the real world. And they're everywhere.
How did so many films and TV shows get so much right about what was coming down the technological pipeline?