Geotag your data activities and view them on a map. Very useful when you travel and roam.
用地理位置在地图上标记你使用数据的精确位置，对旅游或闲逛非常有用。
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It was a neat party trick to control the camera's flash, 5x zoom and with the phone -- and to have the phone geotag those pictures -- but switching apps on the phone disconnected the two every time.