Show HN: Density – The Heartbeat of a City

We posted Density a while back when we used mac address tracking (<a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=7305097" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=7305097</a>). We&#x27;ve since moved to a wirelessly connected door counter, would love some feedback.

It would be nice if you let people know before they signed up for an account what cities you are in...

This is really cool. My cousin and I had a similar idea but a phone would be used instead of a custom sensor.<p>Question - why would a business be OK with broadcasting a &quot;quiet&quot; status? Wouldn&#x27;t that reflect poorly on them?

Very nice! You&#x27;ve taken a big step towards blowing up the assumptions behind the canonical version [0] of the minority game.<p>I imagine you&#x27;re already thinking about how you can enrich your dataset and provide analysis that will help people solve real problems of consequence. Parking might be a big one: there&#x27;s surely money to be made directing drivers to available public parking spots or showing businesses and real-estate developers the potential to share parking among uses that are statistically complementary with respect to parking demand.<p>And please add Kansas City.<p>0. <a href="http:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;El_Farol_Bar_problem" rel="nofollow">http:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;El_Farol_Bar_problem</a>

Will there be an API for this data to allow business owners to extract it?<p>One of my clients is building a dashboard that correlates data from various sources, and this kind of data for physical businesses has long been a dream.

How is the data collected?<p>EDIT: Never mind, I didn&#x27;t see the website where it&#x27;s explained: <a href="http:&#x2F;&#x2F;www.density.io&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.density.io&#x2F;</a><p>Cool product!

This is great, I was just thinking about a similar idea when I waltzed into my empty barbers the other day, good luck!

Does this only work with places that have one entrance &#x2F; exit?<p>Or could someone rig up say, an entire hospital with this thing and see stuff like admission &#x2F; availability of the waiting rooms at nearby ERs?

Had the same idea a while back whenever I called a restaurant to check the wait time and it went to voice mail. App looks good, I will try it out this weekend.

Are there any plans to make the data available via API or maybe offer webhooks? Would be cool for other folks to mashup this data in various ways.

Good concept! Just curious - can the device accurately track multiple people (or group) entering &#x2F; exiting together in one door swing?

Nice, however given the name, the triangle logo associated a lot with destiny the game. <a href="http:&#x2F;&#x2F;img3.wikia.nocookie.net&#x2F;__cb20131219001817&#x2F;destinypedia&#x2F;images&#x2F;4&#x2F;4e&#x2F;Trademark-Confirms-Bungie-Destiny.jpg" rel="nofollow">http:&#x2F;&#x2F;img3.wikia.nocookie.net&#x2F;__cb20131219001817&#x2F;destinyped...</a>

Looks interesting, how do you do this exactly?

Neat idea, though the lack of an Android client is disappointing; is one in the works?

Super cool idea. Best of luck with this.