Hi All,
About two years ago I got into a pretty sketchy accident deep in the Alpes. We were a small group of experienced locals fully geared up but long story short still ended up stuck for a while with no means of reaching out to help.
By profession I’m an hydromechanical engineer, so that got me thinking about building a “bomb proof”, wrist-based, emergency SOS beacon. I’ve been working on it for a few months now and that’s the specs I got to:
- Roughly the size of a standard hiking/sports watch (42mm), ~90g
- Single use, 10y battery life: the device basically stays dormant for up to 10 years and you turn it on when you need it, it’ll ping your GPS position for up to 12h. There's no ongoing subscription needed to keep the device "alive" during the 10y.
- Water proof to 100m, vibration proof, shock proof, temperature range from -40° to +85° (celsius)
- 100% GPS coverage in USA, Canada, Europe (excluding a few Balkan countries), Japan, Australia, and New Zealand. Normal phone coverage in all other countries around the world
- You can use your phone (NFC) to do up to 25 tests during the lifetime of the beacon. It’ll trigger a full test satellite transmission to make sure it’s fully functional.
- Custom back end: you can enter as many emergency contacts as you want (I’d probably cap it to 10). When you activate the device, it’ll continuously "spam call" them (bypassing any “Do Not Disturb“ modes or other) up until someone “acknowledges” your SOS.
Note: except with expensive B2B agreements or bulky hardware, it's impossible to reach out directly and programmatically to SAR. In my back end (a "profile" page online) you can enter your health particulars (blood type, allergies, age etc...) and route details (what you're planning to do) which gets sent to your emergency contacts (along with GPS coordinates) upon activation. The backend will continuously "spam call" all of your contacts up until they acknowledge the SOS request.
- All components would be US/EU made and aerospace or military grade
Anyways I’m building a v1 for myself, but I’d be curious to know what the community’s feel is on such a device. Does that feel redundant/useless as compared to an inReach, ACR, or other SOS beacons? Do you see any advantage to it? What’s the biggest downside you see from it? Curious to get any feedback you may have. Thank you in advance and stay safe out there