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We look at a growing trend using artificial intelligence (AI) to 'connect' people to loved ones who have died.

The grief tech sector, also called "death tech", is now valued at more than 拢100bn globally, according to tech news website TechRound.

We hear from the people using technology, from the businesses building it, and we find out about the ethical challenges they face.

Is it going too far?

Produced and presented by Isabel Woodford

(Image: Woman looking at her phone in the dark. Credit: Getty Images)