A Check-in message is a preset message you can send automatically by pressing the Check-in (check mark) button on the Bivy Stick, or by tapping the "Send Check-In" button in the app. It will contain your text and a link to a private URL page showing your location on a map.
To setup your custom Check-in message, connect the Bivy Stick to the app, and go to the Stick tab on the bottom menu.
Click on "Check-in Setup." Here you can add up to 5 contacts (phone numbers or email address) and type your custom message.
Hit save and your check-in message is all set-up.
A good Check-in message contains your trip plan with starting and end points, as well as estimated time. Say something like, "Checking-in, All Good! Trip plan: Parked at the Aspen Grove trailhead. 11 Mile Mount Timpanogos hike. Starting 8am, expected back 8pm."