the invisible tether.
UWB proximity alerts for hikers, tour groups, and safety teams
How it works
Two small devices; one for each person. Using ultra-wideband radio, the same precision technology in flagship smartphones, both devices continuously measure the exact distance between them. The moment that distance exceeds a configurable threshold, both devices alert simultaneously. No phone required. No cell coverage required. Works indoors, outdoors, and anywhere in between.
Early access
In active field testing. Sign up for launch updates and early access — whether you're outfitting a team or keeping a partner close on the trail.