etc/bluetooth/hcid.conf：hcid 所用的 HCI 后台进程配置文件，它指定了链接模式（主或从）、链接策略、询问和扫描模式，等等。
etc/bluetooth/hcid.conf: HCI daemon configuration file used by hcid that specifies link mode (master or slave), link policy, inquiry and scan mode, and so on
然后这位“同伴”就可以跟踪手机的GPS随时了解他们爱的人所在的位置，而同时应用会定时在用户的主屏幕上显示一个按钮，询问“你还好吗？” 。
The 'companion' can then track the phone's GPS to see where their loved one is at any time, while the app will periodically show a button on the user's home screen asking 'Are you OK?
上个主日，有位年长的女士在崇拜结束后向某一位牧师询问是不是可以补领圣餐，因为她错过了崇拜时的领餐时间；
Last Sunday, after the service, an elderly lady came to one of the ministers to request taking the communion for she missed it during the service.
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