Group Radar · Personal Safety
The trail run where the group splits. The team road trip with three cars. The MBA cohort hitting 14 cities in a semester. The summer camp counselors crossing a state park. The sober-sis rotation at the chapter house.
Your group already keeps an informal radar — the head count at the trailhead, the “who’s in which car” text, the buddy system that everyone agrees to and half the people forget. Group Radar is the system version: opt-in, consent-first, automatic. The seen, by the team they’re actually with.
The job
Every team that does anything outdoors, late, or far has the same fallback: pair up, check on each other, head-count at the next stop. It works until someone gets distracted, until the group splits in a way no one expected, until the buddy system is itself the thing that’s broken.
Humans get distracted, head-counts get sloppy, three-different-cars becomes one-car-missing-and-no-one-noticed. The buddy system isn’t the failure — the buddy system without backup is.
“Made it!” in the team thread is a check-in. “Anyone heard from Maya?” an hour later is a radar — a slow one, with no deadline, fired by whoever happens to remember.
The radar belongs to the team. Not to the school, not to the league, not to a central server we operate. Your group’s data is your group’s data — the mesh makes that architecturally true.
How it works
Your trail-run team. Your cohort. Your spring-break crew. Your sober-sis rotation. Group members opt in once. The group is private to you — we don’t see the roster, the operator doesn’t see the roster, the school doesn’t see the roster. The roster is yours.
Trailhead at 8am. The motel by 10pm. The next city by Sunday night. Group Radar is built around “everyone arrives at this checkpoint by this time,” not “everyone is being tracked all day.” Episode-based, not continuous.
If everyone hits the checkpoint, no one is bothered. If someone doesn’t, the group leader (and optionally the whole group) gets a quiet alert with that person’s last known corridor. The decision to call, to backtrack, to escalate stays with the people who know the route and the person.
Where it actually fits
Where this goes next
Group Radar is the architectural primitive that extends naturally to communities we’re piloting in 2026 and beyond:
River outfitters, ski patrol, organized races, summer camps. Group Radar becomes the on-trip system — ranger crews, guide teams, race volunteers. Mesh extends into the no-cell zones outdoor work actually happens in. See the off-grid story →
Spouses of deployed service members already keep informal mutual-aid networks — pickup chains, school-emergency coverage, watch-each-others-kids systems. Group Radar is the system version. Wave 3 in our roadmap.
The kitchen closing. The festival ops crew. The valet team. Already covered by Walk-Home Radar for individuals, but Group Radar adds the team layer — everyone clocks out, everyone is accounted for.
Common questions
No. Life360 is continuous family-tracking with a data-broker scandal in its history. Group Radar is consent-first and episode-based: members opt into a specific group, the group is private, and the radar only fires on missed checkpoints — not on continuous whereabouts. We don’t store, sell, or analyze location data centrally.
No. The leader runs the group (sets checkpoints, manages roster) but does NOT have access to individual real-time locations. Each member’s mesh is private. When a checkpoint is missed, the leader gets a notification with that person’s last known corridor — just enough to call them and ask if they’re okay.
The group leader (and optionally the whole group) gets a quiet alert. The leader calls first — most of the time, the person forgot to check in. If the call goes unanswered, the group decides together whether to backtrack, to escalate, or to wait. The radar doesn’t auto-escalate to 911. The decision stays with humans who know the route and the person.
Yes, for groups of 3+ in geographic proximity. Tripwire’s network is designed to extend through nearby phones running the same app, so the larger your group, the further the mesh reaches without cell. The off-grid use case is covered in detail at /safety/off-grid/.
Tripwire Recon is free on the App Store, including Group Radar features for groups of any size. Institutional sponsorship (athletic department buying a season for a team, MBA program funding cohort travel safety) is a separate B2B agreement. Contact us for pilot pricing.
Tripwire Recon is free on the App Store. Pull your team in. Set the next checkpoint. Let the mesh handle the head count so the people who care can focus on what they’re actually doing.