Taking advantage of a smart phone's GPS, compass and barometer, the app can determine the location of a person remotely.
通过智能手机的GPS、指南针和气压计，该应用能远程确定某人的位置。
Forexample, the rotational vector sensor is ideal if you are developing a game, anaugmented reality application, a 2-dimensional or 3-dimensional compass, or acamera stabilization app.
打个比方，如果你正在开发一款游戏，包括增强现实的应用，一个2维或者3维德罗盘应用，或者相机防抖的应用等，此时旋转矢量传感器就是最好的选择了。
Click on the compass icon next to someone you've shared your location with in the Nearby Friends section of the app and make sure the "Until I Stop" option is not checked.
点开罗盘图标选项，进入你已经泄露地点信息的周边朋友功能，并且确认自己关闭了这个功能。
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