
Density Open Area
The new standard for counting people in open space.
What it does
Density Open Area is a custom radar sensor built to count people in open space, featuring 4x the coverage and 10x the precision of camera-based alternatives. This anonymous-by-design sensor offers industry-leading accuracy and field of view.
Does the same job
all alternatives →
- DADensity – Anonymous People Counter and API2015 · density.io · ▲258

- DTDensity – The Heartbeat of a City2015 · itunes.apple.com · ▲57

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Hi HN, I built Eigendrum, a web tool that solves the 2D wave equation for arbitrary shapes so you can hear what they sound like as drums. How it works: * Solves -∇²u = λu using finite element analysis (Kφ = λMφ) on a triangle mesh. * Validated to <0.1% error against closed-form solutions for circles (Bessel zeros) and rectangles. * Sound model factors in strike location, Rayleigh damping, and mallet width. * Includes Kac drums I & II to demonstrate identical sound spectra from different geometries. * No frameworks, build steps, or dependencies. Repo and tests:…
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