Simulate chat with deceased fiancé

In a story for the San Francisco Chronicle, Barbeau detailed how Project December, a software that uses artificial intelligence technology to create hyper-realistic chatbots, recreated the experience of speaking with his late fiancé. All he had to do was plug in old messages and give some background information, and suddenly the model could emulate his partner with stunning accuracy.
It may sound like a miracle (or a Black Mirror episode), but the AI creators warn that the same technology could be used to fuel mass misinformation campaigns.
Source: https://www.businessinsider.co.za/man-used-ai-to-talk-to-late-fiance-experts-warn-tech-could-be-misused-2021-7