Eugenia Kuyda, a software developer from the US, has developed a chatbot which is almost identical in speech to her late friend, Roman Mazurenko.
Mr Mazurenko died in 2015 in a car crash just days before he was due to turn 33.
Such was the devastation among his friendship group that one of them decided that they needed to speak to him one more time.
Ms Kuyda, who co-founded technology firm Luka, fed some 8,000 lines of text messages that she had received from Mr Mazurenko into a Google programme that is designed to allow people to create chatbots which in turn creates an experience as if it were two humans chatting.
Article source: http://www.express.co.uk/news/science/720030/Virtual-immortality-developer-chatbot