This paper introduced circuit principle and debugging methods of photoelectric synchronous track camera for vibrating screens.

本文介绍了振动筛光电同步轨迹拍摄仪的电路系统，工作原理及调试方法。

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An attacker who compromises a phone can, for example, track the owner's location by GPS, use the camera to see the phone's surroundings, or turn on its microphone to record conversations.

例如，黑客进入一部手机，可以通过GPS，追踪机主的位置，用摄像头查看手机周边环境，或者打开扩音器记录谈话内容。

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The light so generated is recorded by a camera linked to a computer that keeps track of where the egg that produced the sample is now stored.

一种与电脑相连接的照相机可以检测到这种荧光，从而电脑（根据荧光所在的位置）记录下产生雌激素的鸡蛋所处的位置。

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Many people even kept track of Lois online, through a 24-hour-a-day camera feed on the Museum's web site.

VOA: standard.2010.07.30

Use it to track your camera, briefcase, handbag-anything you never want to worry about losing.

ENGADGET: Kensington wants you to be very afraid of losing your iPhone, buy its $60 Proximo system

OK, you can look at the other side of the usage ratio and say that 45% of photos and videos are still being shot with traditional cameras, and this year, in our Customer Loyalty Engagement Index, we did track digital camera brands.

FORBES: Are Canon, Nikon, and Samsung In Danger of Losing Their Digital Focus?

The system uses a camera to track body movements and reflects those onscreen.

CNN: Motion, 3-D gaming right at home at CES