It’s not uncommon for science fiction to depict hyper-individualized technology that shows personal information in public spaces. Science fiction is becoming reality in the travel industry thanks to Delta and Parallel Reality.
Parallel Reality allows up to 100 people to see their personalized flight information on the same screen. What you see depends on where you’re standing, and the displayed information looks different depending on your position. So while there is the chance that someone in the same position as you or standing behind you can see your flight information, they’d have to be within one to three degrees of your line of vision.