Hiking

Know when someone is separated from your hiking group

On a trail, groups stretch out. Someone takes a wrong fork, stops for a photo, or falls behind, and by the time anyone notices, nobody knows where they went. Crew Guard lets the group's phones watch each other, even with no mobile signal.

How it works

Join the group with one QR code at the trailhead.
Start the guard. The phones keep in touch over Bluetooth and Wi-Fi, passing messages along the line, with the screen off.
Someone drops out of range. After about 2 minutes the others see a first warning. After 5, 10 or 15 minutes (your choice) everyone gets a loud alert: “Ben is separated from the group”.

Last seen here

Every phone records its own GPS position, so the alert shows where Ben was last heard: on the map, with an arrow and the distance.

Made for hiking

Going ahead? Tell the others for 30 minutes to 4 hours. You're shown as away, not lost, and they're only alerted if you're not back in time. “I'm back” ends it early.
Signal helps when there is one: with mobile coverage, a member within about 300 m of the group isn't counted as separated.
A loud alert, not a siren: being separated on a trail isn't a man overboard. The alert is loud enough to stop the group, not to panic it.

Also for hunting parties and foragers

Hunting parties and mushroom or berry pickers split up the same way: someone goes to a stand or follows a track, or drifts off with their head down, and every tree looks the same on the way back. The same guard works for them, without mobile signal in the forest. Leaving on purpose? Use Going ahead, and the others are alerted if you're not back in time.

Crew Guard is not a hunting safety device: never use it to judge where other hunters are before a shot. Positions can be minutes old.

What it isn't

Crew Guard doesn't call rescue services or replace a map, a plan and a group that agrees how to stay together.

Also: mountaineering and ski touring, paddling and sailing. Or see the alarm in action.