Using the hypersensitive camera on the monitor, Dr. Shatzel zoomed in and out and swung the display left and right, much as if he were turning his head to look around the room.

萨彻尔博士利用显示器上高灵敏度的相机缩小放大，并使显示器左右摇摆，很像他转动脑袋环视房间。

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Dr Yadvendradev Jhala of the Wildlife Institute of India, who led the study, said: "Tigers are cryptic, nocturnal and occur at low densities so they are extremely difficult to monitor.

负责这项研究的领头人，来自印度野生动物协会的Yadvendradev Jhala博士说：“老虎属夜行动物，行动隐秘，独来独往，所以很难监测它们。”

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Because sensor networks can detect so many physical phenomena, it seems a waste to monitor only strains and vibrations, says Dr Rice.

Rice博士说，由于传感器网络能发觉许多物理现象，如果只用来检测拉力和振动是有所浪费。

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Dr. Tuckson said that any brand of monitor people choose can be an important tool to spur them to stay healthy and, ultimately, bring down costs for insurers and patients.

WSJ: The Latest Fitness Gadgets to Gauge and Goad

Dr. CHRISTOPHER: We'll have to monitor this, because it's only been in place for a couple of months.

NPR: Examining the Future of Medicare

And for the past five months, thanks to a small but important piece of equipment, Dr Williams' medical team has been able to monitor the health of patients with HIV from a clinic that fits into the back of their four-wheel-drive "community ambulance".

BBC: Mobile technology battles HIV