They coordinate with each other by using GPS location data. That lets them plot out the most efficient way to tackle a clean-up project.

他们可以利用GPS定位数据协同工作，策划出最有效的清理方案。

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He notes the irony of using technology, from GPS location data to mobile social-sharing, to report on a uniquely high-tech form of warfare.

CNN: Dronestagram uses social media to highlight drone strikes

For those not in the know, this is pretty much what it sounds like: basically adding GPS-based location data to digital photos so you know exactly where any particular picture was taken.

ENGADGET: GPS photo linking

As some members of the Supreme Court recognized last year when they considered the use of only a single stream of data -- GPS location -- creating a life stream of data points paints a mosaic picture of a person's actions and habits.

CNN: Google Glass, the beginning of wearable surveillance