破解兇案! Fitbit智能手環心率數據立功!

Fitbit data has been used by US police investigating whether a 90-year-old murdered his stepdaughter.

日前，美國警方通過利用Fitbit手環的數據，調查了一名90歲的男子是否殺害了自己的繼女。

The victim, Karen Navarra, 67, was found with a kitchen knife in her hand, suggesting she killed herself.

受害者凱倫·納瓦拉，今年67歲，被發現的時候手中握着一把廚房用刀，營造出自殺的情景。

Anthony Aiello, who denies murder, told police he had visited her for 15 minutes to drop off pizza.

安東尼·艾洛否認了謀殺，他告訴警察自己是來看望納瓦拉，在她家呆了15分鐘，還給她帶來了披薩。

But police say a fitness tracker she was wearing showed a significant spike in heart rate followed by a rapid slowdown at the time he was there.

但警方發現，納瓦拉佩戴的健身追蹤器顯示，在艾洛在現場的那段時間，納瓦拉的心率明顯提高，然後又迅速下降。

According to a police statement obtained by USA Today, Ms Navarra's Fitbit Alta device showed a raised heart rate at about 15:20 local time, when video evidence suggested Mr Aiello's car was at her house.

根據《今日美國》獲得的一份警方聲明顯示，當地時間15:20分，納瓦拉的Fitbit智能手環顯示她心跳加速，而視頻證據顯示，艾洛的車當時就停在納瓦拉家。

It then recorded her heart rate slowing rapidly and stopping at 15:28, five minutes before he left.

在艾洛離開的五分鐘前，Fitbit智能手環的記錄顯示她的心率迅速下降，並在15：28分完全停止。