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。

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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。