Police in Adelaide Australia have used data from an Apple watch in a murder trial to discredit the version of events provided by a witness.
http://www.bbc.co.uk/news/technology-43629255
Grandmother Myrna Nilsson was wearing the device when she was killed in 2016. Her body was found in the laundry room of her own house
Her daughter-in-law Caroline Nilsson claimed they were both the victim of a home invasion attack by a group of men who had followed the older woman home and entered the house after a row outside. The younger women was later found outside the house by neighbours in a distressed state around 22:00. She claimed she had been tied and gagged by the attackers, and that she had made her way out of the house as soon as they left.
An Apple watch has sensors that record the wearer’s movement and heart rate. According to police, the watch had recorded data consistent with a person going into shock and losing consciousness at around 18:38, and the victim was deceased by 18:45 - over three hours before the younger woman came out of the house.
Prosecutor Carmer Matteo said evidence from the victim’s watch suggested Ms Nilsson had staged the home invasion. Magistrate Oliver Koehn denied bail based on the apparent strength of the prosecution case. The trial will continue in June.