We’re finally in 2019, the year in which Blade Runner — Ridley Scott’s iconic 1982 science fiction film — is set.
Which technologies that exist in 2019 (at least as prototypes) were correctly predicted by Blade Runner?
To clarify, I am looking only for technologies that were not in existence at the time that Blade Runner was made. (All technologies that appear in Blade Runner are relevant, regardless of whether they also appear in other works.)
(These are the same requirements as in a similar question regarding Back to the Future II.)