Observed arrival · 2026-10-26
Belugo: a school-phone gunfire localization prototype
A HackTX prototype uses participating classroom phones to estimate where a sharp sound originated and send an alert.
○Open
⊠Login
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Hackathon judges testing a school-alert prototype
- Worth noticing
- The design sends timestamps, sound levels, and confidence—not recordings—and says at least three phones are needed to resolve location ambiguity.
Field notes
The documented flow keeps spike detection on each phone, then sends a device identifier, timestamp, peak level, and confidence to a server-side grid search. The page says the server clock syncs every minute and gives 343 m/s as the speed-of-sound constant used in the calculation. Its judge demo can use three browser tabs as stand-in phones, but the site presents the system as a prototype rather than a validated emergency service.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
⊠LoginAccess appeared gated
✦PrettyNotable craft visible
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
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