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Expert reveals how to spot hidden cameras in your hotel room
出游贴士：酒店房间哪些地方容易藏摄像头？
There have been various cases of criminals using eavesdropping tools to illegally make private videos of hotel guests and selling those to the porn industry.
犯罪分子利用窃听工具非法拍摄酒店客人的隐私视频，并将其出售给色情行业的案件屡见不鲜。
Such acts not only seriously undermine people's right of privacy but also affect social stability.
这种行为不仅严重损害人们的隐私权，而且影响社会稳定。
Once the family had unpacked, Andrew Barker scanned the house's Wi-Fi network. The scan unearthed a camera, and subsequently a live feed. From the angle of the video, the family tracked down the camera, concealed in what appeared to be a smoke alarm or carbon monoxide detector.
一家人入住后，安德鲁扫描了房子的无线网络，发现了一个摄像头，随后又发现了一个直播入口。这家人根据视频展现的拍摄角度找到了隐藏在烟雾报警器中的摄像头。
The first thing you are going to want to look for is devices that are conveniently placed where a creeper would want to look.
首先，你要寻找的是那些方便放置在偷窥者想要查看位置的设备。
Take this fire alarm for instance, it is placed right above the bed.
拿这个火灾报警器来说，它就放在床的正上方。
One way to see if the device is a camera is to shine a bright light at it.
用强光照射可以查看这个设备是否藏有摄像头。
If you hit a camera lens it’s going to get a blue-ish reflection.
如果你找到了摄像机镜头，它会反射出蓝色的光。
Now you can test this by shining a light at your phone and seeing how the camera looks when placed under a flashlight.”
现在你可以做个测试，打开手机的手电筒灯光，看看摄像头在手电筒下的样子。
This alarm clock is mirrored, but if we shine a bright light at it we can see through the glass and see there is a camera there.
这个闹钟有个镜面装置，但如果我们用强光照射它，我们可以透过玻璃看到，那里有一个摄像头。
This technique can also work on two-way mirrors.”
这种技术也适用于双向镜（单面透视玻璃）。
These cameras are really small as you can see here, so they can be hidden in anything, even a hole in the wall.”
正如你看到的那样，这些摄像头非常小，所以它们可以隐藏在任何东西里，甚至是墙上的一个洞里。
Night vision cameras use infrared LEDs to see, and if we use the front-facing phone camera, we can actually see the LEDs.
夜视摄像头使用红外发光二极管成像，透过手机的前置摄像头，可以看到那些发光二极管。
The front-facing camera is the only one that tends to work as the back-facing one has an IR filter.”
只有前置摄像头可以做到这点，因为后置摄像头带有红外滤光片。
