A South Australian woman charged with the murder of her mother-in-law based partly on evidence collected from a smartwatch has pleaded not guilty.
Caroline Dela Rose Nilsson, 29, is accused of murdering 57-year-old Myrna Nilsson in the laundry of her home at Valley View, in Adelaide's northeast, in 2016.
She entered her plea with the help of a translator in Adelaide Magistrates Court on Friday.
She allegedly told police intruders had killed her mother-in-law before gagging her and tying her up, but she was arrested after data was collected from an Apple Watch worn by the victim.
The court has previously heard a forensics expert had analysed data from the watch and had narrowed the time from when she was attacked to when she died to a seven-minute window.
Prosecutors said the data showed a burst of heavy activity, consistent with the woman being the victim of an "ambush-type" attack followed by a period of less activity when she possibly lost consciousness.
If those timings were accepted, they would contradict statements from the accused that her mother-in-law had been involved in an argument with her attackers for about 20 minutes.
Magistrate Alfio Grasso remanded Nilsson in custody to appear before the Supreme Court in November.
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