Ai takes in load of data and then through a program is able to answer questions in a similar way to what it's been fed. The more data, the more accurate the answers will be. Try it yourself - https://chat.openai.com/
With enough input AI could answer a question similar to how we would. Feed it our online persona /messages and you have a chat bot that responds the same as you or in the case of this list, your deceased loved one.
With this you could talk to the dead and have them realistically respond back to you. If you continue to feed in the new chat as data the dead can also grow. Spooky.
Now we add in all the audio data of that person. Mix that with the previous idea and we have AI that not only answers like them, but sounds like them as well. 'Hey [deceased loved one] play music.'
Feed the AI images and videos of you loved one and mix with the rest of your data and you have AI that can visually talk back to you. You could also recreate old memories and new ones by feeding it new info.
Recreate the time when we went to Pizza Hut together in 1999. I was wearing my blue Pokemon hoody and you were wearing your flame shirt and a bandana.
4. 3D Models
There's already companies that will scan your face, make a 3D model and then print your face so it can be put onto an action figure. Use the same technology along with AI to scan images /videos and build an 3D model of your loved one. Add a rig (skeleton) and they can then move. Add in their mannerisms and the previous data and your loved one is essentially still alive, trapped in your computer. You could play Sims using them.
5. Augmented reality
Mixing the real world with the computer generated one. Through the right lens you can see both. You now can put on magic glasses and have your loved one on the couch next to you. Talking away as you both watch TV. Take them off and they disappear.
This is a lot further down the line. Add the 3D model data to a robot and suddenly you have a physical copy of your love one.
7. Will I live forever?
Yes... And no.
Our 'soul' that conscious voice in our heads. The 'me' that still exists when facing my clone. That unfortunately still dies. But could you tell the difference between an exact clone of your loved one and your loved one? They probably think similar to you. So at least in everyone else's eyes, you'll live forever.
So what should we do? Make content. Make videos of you talking your usual gibberish. That's the you your loved ones love. Write diaries so ai can understand how you think. Take lots of photos so the 3D Models can be as accurate as possible. The more you put in the more accurate it will be.
And if you hope to continue interacting with loved ones after they pass, make sure they do the same.
Or... Allow them to pass. Appreciate that our time together is short. Make every moment count and hold onto your memories dearly, until your last breath. Are we ment to live forever?