If you are a little afraid when you walk alone at night, you can phone your family to make sure they know you are s But making calls may make you the target (目标) for bad people.
Now there is an app and ilets your family know your journey. And it will call for help when it feels you're idanger.
The app is c Companion(同伴). Before you start your journey, you input your starting place and your finishing place. Then you s them to your companion. The companion can be anyone in your phone book, and they don't nto have the app.
The app will tell your companion wyou are at any time. And it will show a button(按钮) on your phone screen every few masking “Are you OK?” If you don't press the button in 15 seconds(秒), your companion will get an alarm(报警). And the app will be ready to call the police for h.
With the app, you will never be wabout going home alone.
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