For guides and outfitters

See where your clients were last heard, with no cell service.

Signum shares one map and chat across your group by radio. Clients scan to join, you pin the truck and camp, and everyone sees how old each position is.

Join the field-test list How it works

Signum map of a group with waypoints, a recorded track and a radio

You are responsible for people who wander.

A guide has clients on different gear and different phones, spread across ground with no cell service. Walking out or calling by radio to check on everyone takes time you would rather spend guiding.

Every trip also starts with a setup problem. Clients show up with whatever they own, and anything that needs a long walkthrough at the truck eats the morning.

You want to know where people were last seen, and you want to be honest about how old that information is.

A guided day

At the truck, you make a group and each client scans the QR code to join, if they choose to.
You save the truck and camp as waypoints so every client can find them.
Out on the ground, you open the map and see each client's last-known position with its age.
A client is slow on the climb, so you send them a short message and pin where you are waiting.
A client sends a small photo of what they found, and you reply with a reaction.
At the end of the day, everyone navigates to the truck waypoint and you check the names.

What you get

Clients join by scanning

One QR code and one confirmation. Nobody is added without choosing to join.

Last-known positions, with age

See where each client was last heard and how long ago, never shown as more current than it is.

Truck and camp waypoints

Pin the places everyone needs to get back to.

Works across radio brands

Radios from different makers can still share one group.

Short messages and small photos

Reach the group or one person without cell service.

Map and chat together

Keep an eye on the group and read replies on one screen.

See it

Signum group chat with a photo, reactions and a shared track — Chat without a tower

Signum map layers list with group, land and personal layers — Layers on your terms

Signum home screen with the radio ready and an active group — Ready in a glance

Swipe for more

Demo group in Yosemite Valley. People and messages are for demo purposes.

Ready in three steps

1
Pair your radio
Pair a compatible radio with your Android phone.
2
Make the group
Create it at the truck and show the QR code.
3
Clients scan
Each client scans and confirms to join.

Signum is not an emergency service and makes no range promises. Good to know

Start your next trip with one QR code.

Join the field-test list Other ways to use Signum