this post was submitted on 01 Apr 2025
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Show HN: Offline SOS signaling+recovery app for disasters/wars (github.com)
submitted 1 week ago by rssbot@lemmy.bestiver.se to c/hackernews@lemmy.bestiver.se
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[–] mearce@programming.dev 1 points 1 week ago* (last edited 1 week ago)

It seems neat! Not sure, though, how much better it is than a whistle or noise maker, given its range. It does make noise when activated, so maybe the BLE can be used when the sound isn't as useful.

Signal range

  • BLE range: typically 10-30 meters indoors, further outdoors, limited by rubble and building materials.