#holograms

Raven hologram stamp

[C] Late-night Tinkering

To explain, 1000 years into the future they've invented technology that allows a person's complete personality and memories to be saved onto physical storage. Then when that person dies they can "come back" as a hologram. Essentially they're a computer simulation of their living selves, still dead and technically not them, just acting based on probabilities determined from the saved data of them. This is usually done on dangerous jobs that have required personnel, so in the event of them dying they can be brought back. Because even in the future they ain't gonna let workers rest even if they're dead, even if it technically isn't them being brought back, just a simulation but you get the idea.

Now, the drawback of Holograms is that it takes a supremely high amount of CPU processing power to run just one, as well as consuming enough power to illuminate Paris for 3 years every second. Therefore most of the time they can only have 1 active at a time. Plus the fact that because they're made of light they can't touch or hold any physical objects, not even being able to sit down in normal chairs.

And that's just the physical aspects, because the other catch is due to how they simulate the person so well, some Holograms of tend to suffer from an existential crisis because they're technically dead. They see their loved ones moving on even though they're still there, and a lot of them are unsure of their own existence because to them they feel real but they're computer simulations, so they don't know if they feel real or if it's the computer making them think they're real.