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.
Following the older Mrs Nilsson's death, Caroline Nilsson was found in the street by neighbours with her hands and face bound with tape.
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 iWatch 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.
Australian Associated Press