What do cell phones look like in the year 2144?
Obviously they won't have a screen anymore. They'll be pop-up displays. So if you're sitting on a train and your romantic partner sends you a steamy selfie...guess who has an audience?
Has this annoyed anyone else?
If they're tactical screens, that makes sense. But I still don't think transparent displays on personal devices will be a thing in the future.
I guarantee it will take the immediate possibility of being able to profit in the exact way as your second sentence to motivate investment in the required leap in tech to provide your first sentence. :-(