Police use Apple Watch health data as evidence in murder case

Your smartphone knows plenty about you, and it's that health data that's apparently been key to solving an Australian murder case.
In September 2016, 57-year-old Myrna Nilsson was found dead in the laundry of her Adelaide home. 
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According to ABC News, her daughter-in-law Caroline Dela Rose Nilsson told police that a group of men had invaded the home and attacked her mother-in-law. 
Bound and gagged, Caroline Nilsson