From photos to personal posts and private messages, social media users leave a long digital trail behind them. Who owns that data when they die?

With about 1 in 3 people worldwide estimated to have a social media account, the question has become more pressing for legal experts.

It was brought to the fore last week by the family of a deceased teenage girl in Britain. The parents of Molly Russell, a 14-year-old who committed suicide in 2017, told media they had been unable to access data on her phone, including her Instagram account, which they said might hold clues to why she took her own life.