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Show HN: Offline SOS signaling+recovery app for disasters/wars

(github.com)
158 points nizarmah | 1 comments | 01 Apr 25 21:58 UTC | HN request time: 0.21s | source

A couple of months ago, I built this app to help identify people stuck under rubble.

First responders have awesome tools. But in tough situations, even common folks need to help.

After what happened in Myanmar, we need something like this that works properly.

It has only been tested in controlled environments. It can also be improved; I know BLE is not _that_ effective under rubble.

If you have any feedback or can contribute, don't hold back.

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Sakthimm ◴[02 Apr 25 08:12 UTC] No.43554609[source]▶
My friend works at one of the world's largest steel plants and recently he was discussing some ideas with me about solving the problem of people disappearing during inspections and being found dead after a few days. Apparently it is a huge problem there that he wanted to build a startup around the tech.

I am saying this because I think your target market may not be people stuck under rubble, but large scale industries, construction site workers, miners, firefighters, who can install the app beforehand. Cheers.

replies(3): >>43554751 #>>43555020 #>>43558954 #
1. toomuchtodo ◴[02 Apr 25 17:15 UTC] No.43558954[source]▶
Are there any products that can act as a locator beacon, in perhaps a pager form factor? They listen for a signal from a powerful base station at frequencies low enough to deeply penetrate RF opaque material, and upon command, could key up and transmit at max power while using Time of Flight to triangulate (from a network of base stations)? 900mhz comes to mind, but perhaps there are alternate, more optimal frequency bands for this.

It's a local version of https://www.findmespot.com/