A useful feature of Apple's wireless AirPods, designed to help hearing impaired, can also be used to engage in eavesdropping - and people's reactions are mixed.
The feature Live Listen was released with iOS 12, and according to Apple, can be used with AirPods to turn your iPhone iPad, or iPod touch into a microphone - which can then send sound to your AirPods.
根据苹果公司的消息， 随着系统iOS 12开启了Live Listen的功能，苹果无线蓝牙耳机AirPod可以将你的苹果手机，平板iPod变成麦克风——可以把声音传送到耳机。
“Live Listen can help you hear a conversation in a noisy area or even hear someone speaking across the room,” the website states.
It's an accessibility feature mainly designed for the benefit for the hearing impaired.
However, as some users have pointed out on Reddit, Live Listen also means Apple users can listen to conversations going on in another room - as long as their iPhone is in the room, they have their AirPods in and Live Listen is turned on.
不过在红迪网（Reddit）上一些用户称，苹果用户可以在另外一个房间通过此功能监听，只要他们的手机在房间内，打开Live Listen 功能，手里有耳机就行。
“If you have AirPods, you can press 'Live Listen' to 'On' and leave your phone in the room with someone and you can hear what they are saying, thank me later,” one person wrote.
To turn on Live Listen, AirPods must be on, at which point an ear symbol will appear in the iPhone drop-down control centre.
Once on, the sensitivity of the microphone can be modified to pick up more or less sound. The previously little-known feature has gone viral, people are suggesting it will be a game-changer when it comes to eavesdropping.
“This 'Live Listen' button on iPhone with the AirPods combination is going to cause some problems…” one person wrote. Another said: “Literally just bought AirPods to spy on people.” Before AirPods were released, the Live Listen feature only worked with Made for iPhone hearing aids.