I always love that scene in Batman where he's hacked everyone's phone to see all their cameras.
It looks like everyone in the world is standing around everywhere pointing their phone cameras in the most convenient directions to give a great view of streets, rooms and hallways everywhere.
In real life, if you tuned into people's cameras right now, fifty percent would be the inside of pockets, purses or clothing. A quarter would be pointed at blank walls, ceilings, floors or the sky. And the rest would be terribly close close-ups of people faces or the shower/bathroom/sink.
If I remember correctly, it wasn't the cameras, it was the microphones. It was able to recreate 3d scenes with some kind of sonar algorithm (probably by combining the microphones from multiple people in the same room?) (I actually really liked Batman using sonar). 3d images from microphones still sounds farfetched but, may actually be possible soon
Guess it's a good thing my case has a slider that blocks the camera. They can tell where but not what. Though with mic they can probably tell what most of the time too for me, yay for spying on me watching cartoons and playing video games. Now that I typed it I realized how little had changed in 30 years, thankfully there's new of both to enjoy.