Family members could be kept alive forever virtually so living relatives could interact with their avatars, an academic has suggested.
Simon McKeown, a reader in animation and post-production at Teesside University in Middlesbrough, England, claims that within 50 years computers will be advanced enough to create "synthetic digital life" based upon people's past movements, preferences and history on social media.
The avatars would be created using a process called "photogrammetry" which can accurately reconstruct a virtual 3D shape of a human being from existing photographs and video.
Computer voice synthesis will take account of local and regional accents to deliver a more accurate representation of what they sounded like.