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Show HN: Density – Anonymous People Counter and API

density.io

121–130 of 153 posts

Re: Show HN: Density – Anonymous People Counter and API

#121
post #115
post #101

Earlier quoted context omitted.

I hate this user hostile trend among hardware startups, that is requiring/involving third party "cloud" infrastructure for no particular reason other than to extort money out of customers.

The hardware sounds dead simple, not to mention cheap. The service is the actual product here.

I don't think the hardware is simple. How would you design something like this? I've thought about this problem for years and no elegant solution has occured until I saw this.

Re: Show HN: Density – Anonymous People Counter and API

#122
post #88

Earlier quoted context omitted.

There's not much actual information available (this should be concerning), but there have been some clues dropped into past HN threads. This is a picture posted in another HN thread of their "original sensor" which is just 2 basic IR sensors: https://s3.amazonaws.com/screenshots.angel.co/73/340163/7982... As far as I can tell from the updated website, the new sensor is the same thing, just dressed up nicer. Each sens…

Andrew @ density.io answered this for me. It can determine traffic direction; which is a leap beyond current technology i.e. a break beam, which cannot.

> It can determine traffic direction; which is a leap beyond current technology i.e. a break beam, which cannot.

all it would take is two or more beams and some pretty simple code, am I missing something?

Re: Show HN: Density – Anonymous People Counter and API

#123
post #88

Earlier quoted context omitted.

There's not much actual information available (this should be concerning), but there have been some clues dropped into past HN threads. This is a picture posted in another HN thread of their "original sensor" which is just 2 basic IR sensors: https://s3.amazonaws.com/screenshots.angel.co/73/340163/7982... As far as I can tell from the updated website, the new sensor is the same thing, just dressed up nicer. Each sens…

Hi, that's indeed our old sensor which is composed of two AIR sensors. The new sensor carries a slight upgrade in hardware, but the real power comes from our signal processing. See my reply to thwest here. https://news.ycombinator.com/item?id=9879671

So you use 2 different IR sensors, which "measure your circumference to some degree" and provide a "distance profile" which somehow translates into real-time accurate foot traffic counts. IMO that's definitely a cop-out explanation, and per usual, there is not any actual quantification.

Re: Show HN: Density – Anonymous People Counter and API

#124
post #122

Earlier quoted context omitted.

Andrew @ density.io answered this for me. It can determine traffic direction; which is a leap beyond current technology i.e. a break beam, which cannot.

> It can determine traffic direction; which is a leap beyond current technology i.e. a break beam, which cannot. all it would take is two or more beams and some pretty simple code, am I missing something?

Nope, not missing anything. There are 2 beams (IR) per one of their "sensors", and it's assumed they're determining direction by noting which beam fires first vs second.

Re: Show HN: Density – Anonymous People Counter and API

#125
post #106

Earlier quoted context omitted.

This is obnoxious website behavior, and I equate it to sites ignorantly disabling right-clicking because they're paranoid someone will steal their photos. If your site contains any links at all, you should never, ever be breaking such basic browser functionality. The only possible legitimate use case would be a webapp which is attempting to create a desktop-style environment, and even then, co-opting the CTRL or ALT…

I disable right click on my Website.

For what reason? This is easily bypassed.

Re: Show HN: Density – Anonymous People Counter and API

#126
post #115

Earlier quoted context omitted.

The hardware sounds dead simple, not to mention cheap. The service is the actual product here.

I don't think the hardware is simple. How would you design something like this? I've thought about this problem for years and no elegant solution has occured until I saw this.

Hmm? Two beams detecting directionality + WiFi?

Re: Show HN: Density – Anonymous People Counter and API

#127

Earlier quoted context omitted.

I disable right click on my Website.

For what reason? This is easily bypassed.

If you visit his website [0] it's (at least I hope) intentionally poor designed, everything terrible straight from the late 90's in web design. From marquee, blinking, embedded mp3, and more.

There's a built-in bypass in the site.js to allow the context menu if shift is held, though you still get the alert. Or it's just that holding shift allows the context menu to appear after the alert. I don't actually know.

  document.body.oncontextmenu = function() {
    alert('Please dont right click!!')
    return window.event.shiftKey // top secret
   }
[0] bitfission.com

Re: Show HN: Density – Anonymous People Counter and API

#128
I have a few questions for the Density folks:

- How well does it handle people walking in side by side?

- What about someone pushing a cart or stroller?

- Can it tell if someone is walking in or out?

- How far does the laser reach? Would I need two sensors if I had a double or triple wide door?

- I assume these are battery powered? How long do they last?

Re: Show HN: Density – Anonymous People Counter and API

#129
post #102
post #93

Earlier quoted context omitted.

Yup, as soon as I read 'free hardware, free to install' I immediately though 'Service model' Also I don't think this data is particularly attractive to anyone except competitors... and even then its not like its an email list or anything, merely traffic.

I would say it's extremely useful -- most establishments have a general idea of foot traffic (ie: POS transactions or qualitative visual assessment) whereas with density.io you have a detailed history of when and where there's foot traffic. Why would someone want to know this information? Ideas abound! I don't think we've had such easy measurement and monitoring at the fingertips of the general populace. Having detai…

Oh the data itself is interesting, but not particularly sell-able to others, in my opinion.

The alternative to this platform are little devices that monitor things like cellphones that walk into the room, and use this to approximate occupancy.

Re: Show HN: Density – Anonymous People Counter and API

#130
This seems really cool! I can think of a bunch of new things to do with this and a lot of places where I want to know how busy they are.

The one thing that really confuses me is the pricing structure. Why do you need to pay each month? Paying $300 for one year of usage seems pretty steep.

It's service pricing but it seems like one-time service/purchase.

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