With long-range @helium coverage, @IotOffGrid is developing an open source application to keep hikers safe on dangerous trails. Check out their progress 👇. https://twitter.com/iotoffgrid...
IotOffGrid拥有远程“氦”覆盖范围，正在开发一个开源应用程序，以确保徒步旅行者在危险小道上的安全。查看他们的进度👇. https://twitter.com/iotoffgrid...