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Growth · March 19, 2026

Alarm Club

A scavenger hunt built on Boston MA's 1852 fire alarm system

What it does

Boston's fire alarm boxes turned into a game. Walk to one, photograph the number, claim it. You're also fixing Boston's data. 1,400+ boxes to find. A real-world scavenger hunt and civic mapping project. Boston installed the world's first municipal fire alarm telegraph in 1852, built by Dr. William F. Channing and Moses G. Farmer, more than two decades before the telephone. A lot of these boxes still work. Now you can actually see them - and help make sure the data is right.

Does the same job

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    Hey HN. I'm a high schooler in Fremont, CA. Tuesday morning I got a county-wide AC Alert text telling everyone in Alameda County to prepare a go-bag for an East Bay Hills Red Flag Warning that starts tonight at 11 PM. The text went to ~half a million phones. The actual NWS warning polygon only covers East Bay Hills (NWS zone CAZ515). Most people who got the text don't need a go-bag tonight. Some in the hills don't realize how close they are. So I built this tool - https://redflag-check.info/ mit licensed public github -…

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