[{"data":1,"prerenderedAt":669},["ShallowReactive",2],{"project-9878597":3},{"id":4,"name":5,"line":6,"line_source":7,"title":8,"url":9,"domain":10,"maker":11,"posted_at":12,"year":13,"points":14,"comments":15,"rank_in_year":16,"shown_in_year":17,"top":18,"tier":19,"category":20,"subcategory":21,"format":22,"keywords":23,"reception":28,"sentiment":29,"stance_mix":30,"scored_comments":35,"aspects":36,"strip":50,"post_text":51,"what":52,"said":114,"maker_in_thread":223,"shape":234,"grid":236,"attempts":630,"same_week":631,"maker_shows":47,"maker_hidden":662,"reader_version":663,"card":664},"9878597","Density","Anonymous People Counter and API","title","Show HN: Density – Anonymous People Counter and API","http:\u002F\u002Fwww.density.io\u002F?ref=hn","density.io","jordanmessina",1436800463,2015,258,145,62,2565,3,"legend","data","people counting analytics","hardware",[24,25,26,27],"people counter","foot traffic","infrared sensor","occupancy api","curious",0.01,{"positive":31,"neutral":32,"mixed":33,"critical":34},18,44,5,21,88,{"docs":37,"performance":39,"design":41,"idea":44,"pricing":46,"privacy":48,"execution":49},{"positive":38,"critical":18},0,{"positive":40,"critical":18},1,{"positive":42,"critical":43},6,2,{"positive":45,"critical":33},7,{"positive":40,"critical":47},4,{"positive":38,"critical":43},{"positive":38,"critical":40},[43,47,40,43,47,43,47,40,38,38,38,38,38,40,38,40,33,43,33,40,18,38,18,38,33,18,47,47,40,33,38,40,47,43,33,47,33,18,47,47],null,{"problem":53,"audience":65,"pricing":80,"motivation":92,"time_to_build":51,"stack":96,"openness":111,"stage":112,"team_size":113},{"value":54,"source":55,"evidence":56},"Measuring foot traffic and occupancy in physical locations","inferred",[57,61],{"id":58,"by":59,"text":60},"9880443","ihsw","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…",{"id":62,"by":63,"text":64},"9878626","afar","Foot traffic should be inexpensive, accurate, and available in real-time. It should be dead simple to integrate with other applications, and it should never invade people's…",{"value":66,"source":55,"evidence":67},"Retail stores, cafes, libraries and other businesses with physical entrances",[68,72,76],{"id":69,"by":70,"text":71},"9882197","tzm","I own a retail store and have been wanting this type of data to quantify behavior, find correlations and discover patterns. In it's simplest form, it could help to quantify…",{"id":73,"by":74,"text":75},"9879267","sbuccini","Our student consulting group, Optimir, worked with Density to test their product around UC Berkeley's campus. It's a fantastic product, and we're really excited to get these…",{"id":77,"by":78,"text":79},"9878806","joeyespo","This looks awesome! Would love to know ahead of time how crowded my local coffee shop is before I packed up to work there.",{"value":81,"source":82,"evidence":83},"Hardware and install free; $25 per month per location subscription","commenter",[84,88],{"id":85,"by":86,"text":87},"9880319","berberous","Hardware\u002Finstall is free, but costs you $25\u002Fmonth\u002Flocation to receive your data. (Not that this means they are not also selling data elsewhere).",{"id":89,"by":90,"text":91},"9880446","Smushman","I spoke with Andrew over at density.io. His answers regarding can it see the traffic direction (answer - yes for each individual) and how it is powered (custom length power…",{"value":93,"source":82,"evidence":94},"Give businesses detailed foot traffic data in the physical world",[95],{"id":58,"by":59,"text":60},[97,104],{"value":98,"source":82,"evidence":99},"Raspberry Pi base unit",[100],{"id":101,"by":102,"text":103},"9880237","escobar","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…",{"value":105,"source":106,"evidence":107},"Infrared sensors","maker",[108],{"id":109,"by":11,"text":110},"9878886","We're using infrared sensors to detect ingresses and egresses from locations.","paid","launched","company",{"praise":115,"objections":136,"requests":166,"questions":175,"alternatives":196},[116,131],{"value":117,"source":82,"evidence":118},"Landing page is clear and well designed",[119,123,127],{"id":120,"by":121,"text":122},"9879026","robotnoises","Had no idea what this was. Clicked link. Within one minute I figured out what Density is. Nice job on the landing page! IMO, this is the strongest section:…",{"id":124,"by":125,"text":126},"9878990","dhaivatpandya","Fantastic product idea and a landing page that's so good that I figured out what the product does without touching my scroll wheel. I wish however, you'd include a section that…",{"id":128,"by":129,"text":130},"9878923","nubela","Gorgeous web design, kudos.",{"value":132,"source":82,"evidence":133},"Useful data for businesses and retailers",[134,135],{"id":58,"by":59,"text":60},{"id":69,"by":70,"text":71},[137,152],{"value":138,"source":82,"evidence":139},"Subscription model criticized and no privacy policy",[140,144,148],{"id":141,"by":142,"text":143},"9880053","tyho","Why does this need to connect to your servers? What happens if you become insolvent? Why can't I just buy the damn thing then use it? Why do I have to pay for a subscription to a…",{"id":145,"by":146,"text":147},"9880038","Animats","The site is rather vague. They provide the hardware and install it for free, which implies they're selling data to someone else. Who? There's no privacy policy. No terms of…",{"id":149,"by":150,"text":151},"9880604","watty","Looks like an awesome product and hardware but the SAAS model sucks (for us). Here's to hoping they release a LAN model for a one time fee.",{"value":153,"source":82,"evidence":154},"Doubts about counting accuracy and handling of groups",[155,159,163],{"id":156,"by":157,"text":158},"9882820","jondubois",">> Is it good enough to estimate the number of people inside by subtracting out counts from in counts? > Yes. It's better than just an estimate What if someone waved their hand…",{"id":160,"by":161,"text":162},"9881388","agotterer","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…",{"id":164,"by":102,"text":165},"9880974","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…",[167],{"value":168,"source":82,"evidence":169},"Offline or LAN version with one-time fee",[170,171],{"id":149,"by":150,"text":151},{"id":172,"by":173,"text":174},"9879086","lost_my_pwd","Any plans to offer a \"disconnected\" version where I could push this data to my own aggregator+API instance? Use case for me would be where foot traffic numbers would itself be…",[176,188],{"value":177,"source":82,"evidence":178},"How does the sensor determine direction and handle groups",[179,183,184],{"id":180,"by":181,"text":182},"9880110","noxryan","I was also wondering about its ability to determine the direction of traffic. If it relies on a location having a separate entrance and exit, that's a pretty big negative. I'm…",{"id":89,"by":90,"text":91},{"id":185,"by":186,"text":187},"9880937","serf","> 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…",{"value":189,"source":82,"evidence":190},"Who buys the data and how is it used",[191,192],{"id":145,"by":146,"text":147},{"id":193,"by":194,"text":195},"9881488","Flammy","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…",[197,205,209,216],{"value":198,"source":82,"evidence":199},"Video people counting systems",[200,201],{"id":145,"by":146,"text":147},{"id":202,"by":203,"text":204},"9879141","sultanofsaltin","Don't camera systems beat this in pretty much every way? http:\u002F\u002Fwww.placemeter.com\u002F comes to mind. You don't have to resort to infrared sensors in order to provide anonymity, but…",{"value":206,"source":82,"evidence":207},"Placemeter",[208],{"id":202,"by":203,"text":204},{"value":210,"source":82,"evidence":211},"Motionloft",[212],{"id":213,"by":214,"text":215},"9881534","downandout","This reminds me of Motionloft. Their CEO was an idiot and ran into some legal trouble [1] which hurt the company, but it was backed by Mark Cuban and is still running afaik. I…",{"value":217,"source":82,"evidence":218},"ShopperTrak",[219],{"id":220,"by":221,"text":222},"9878947","tommccabe","How does your product compare to existing traffic solutions, like Shoppertrak?",{"comments":45,"answered":33,"key":224},[225,228,231],{"id":226,"text":227},"9879079","Right, the increase was on the webpages that included Density to show seating capacity.",{"id":229,"text":230},"9879122","This isn't in the pipeline but shoot us an email and maybe we can work something out: team@density.io",{"id":232,"text":233},"9878903","Thank you! Fixing it now.",{"commenters":35,"max_depth":45,"maker_replies":45,"first_comment_mins":47,"lifespan_hours":235},127,[237,239,241,243,246,248,251,255,257,261,264,267,270,272,275,277,279,282,283,287,290,291,293,296,298,301,303,306,309,311,315,318,321,324,327,329,332,335,338,341,343,346,349,352,354,356,359,362,366,368,371,374,377,380,383,386,387,390,392,396,399,402,404,406,410,412,413,415,418,419,422,424,427,430,433,436,438,441,443,445,448,450,452,454,456,458,460,462,466,467,468,471,475,480,482,484,488,490,494,496,498,501,503,507,509,511,515,519,522,525,527,529,531,532,536,540,543,547,549,551,555,558,563,566,570,572,575,579,584,586,588,591,595,597,601,605,606,608,611,613,615,618,622,626,628],[145,38,40,238,146,38],"project\u002Fcritical\u002Fdocs",[180,38,18,240,181,38],"project\u002Fneutral\u002Fperformance",[101,38,18,242,102,38],"project\u002Fneutral\u002Fdesign",[244,38,33,245,90,38],"9880393","project\u002Fpositive\u002Fperformance",[185,38,18,247,186,38],"project\u002Fneutral\u002Fidea",[249,38,38,250,102,38],"9880985","commenter\u002Fneutral\u002Fnone",[252,38,18,253,254,38],"9880455","maker\u002Fneutral\u002Fdesign","pkelchte",[164,38,40,256,102,38],"project\u002Fcritical\u002Fperformance",[258,38,18,259,260,38],"9881518","project\u002Fmixed\u002Fdesign","nemik",[262,38,38,250,263,38],"9882405","HeyLaughingBoy",[265,38,18,242,266,38],"9880251","patcheudor",[268,38,38,269,90,38],"9880381","commenter\u002Fneutral\u002Fdesign",[85,38,18,271,86,38],"project\u002Fneutral\u002Fpricing",[273,38,40,274,194,38],"9880363","project\u002Fcritical\u002Fpricing",[58,38,33,276,59,38],"project\u002Fpositive\u002Fidea",[193,38,40,278,194,38],"project\u002Fcritical\u002Fidea",[280,38,38,250,281,38],"9883283","x5n1",[69,38,33,276,70,38],[284,38,18,285,286,38],"9880595","project\u002Fmixed\u002Fprivacy","kefka",[288,38,18,289,63,38],"9882205","maker\u002Fneutral\u002Fnone",[156,38,40,256,157,38],[124,40,33,292,125,38],"project\u002Fpositive\u002Fdesign",[294,40,18,247,295,38],"9879056","crindy",[226,40,38,297,11,40],"maker\u002Fneutral\u002Fdocs",[299,40,18,300,203,38],"9879299","project\u002Fneutral\u002Fdocs",[302,40,40,238,102,38],"9879421",[304,40,38,305,203,38],"9879492","other\u002Fneutral\u002Fnone",[307,40,40,238,308,38],"9879783","degenerate",[310,40,18,297,63,38],"9879871",[312,43,38,313,314,38],"9878884","other\u002Fneutral\u002Fidea","codeshaman",[316,43,38,305,317,38],"9878985","staz",[319,43,38,305,320,38],"9879027","Xorlev",[322,43,38,305,323,38],"9878996","nikolaj",[325,43,38,305,326,38],"9879033","tehwebguy",[328,43,38,305,320,38],"9879017",[330,43,38,313,331,38],"9879126","ceejayoz",[333,43,38,305,334,38],"9879239","juliangregorian",[336,43,38,305,337,38],"9879319","grundleborg",[339,43,38,305,340,38],"9881970","NeutronBoy",[342,43,38,305,63,38],"9879129",[344,43,38,305,345,38],"9879317","bgilroy26",[347,43,38,305,348,38],"9879465","pdeuchler",[350,43,38,305,351,38],"9880069","toomuchtodo",[353,43,38,305,348,38],"9880346",[355,43,38,305,351,38],"9880453",[357,43,38,305,358,38],"9880395","MichaelGG",[360,43,38,313,361,38],"9879625","mmorris",[363,18,40,364,365,38],"9879627","project\u002Fcritical\u002Fdesign","web007",[367,18,18,253,63,38],"9879898",[369,18,40,364,370,38],"9880470","bryans",[372,18,38,269,373,38],"9880860","willlll",[375,18,38,269,376,38],"9880890","Nadya",[378,18,38,269,379,38],"9881125","icelancer",[381,18,38,382,376,38],"9881139","other\u002Fneutral\u002Fdesign",[384,18,38,305,385,38],"9882452","geofft",[141,47,40,274,142,38],[388,47,40,274,389,38],"9880399","soggypretzels",[391,47,40,274,142,38],"9880431",[393,47,38,394,395,38],"9880607","commenter\u002Fneutral\u002Fpricing","dotBen",[397,47,18,271,398,38],"9880781","mng2",[400,47,33,292,401,38],"9880936","PascLeRasc",[403,47,18,242,379,38],"9881137",[405,47,18,242,63,38],"9882075",[407,47,40,408,409,38],"9880644","maker\u002Fcritical\u002Fnone","maxsilver",[411,47,18,271,63,38],"9882130",[120,33,33,292,121,38],[414,33,38,305,63,38],"9879157",[416,33,38,417,351,38],"9880073","other\u002Fpositive\u002Fnone",[202,42,40,278,203,38],[420,42,18,300,421,38],"9879389","daenz",[423,42,40,256,102,38],"9879588",[425,42,18,240,426,38],"9879692","tonyhb",[428,42,18,240,429,38],"9879927","Pyfagorass",[431,42,38,432,63,38],"9879449","commenter\u002Fneutral\u002Fprivacy",[434,42,38,432,435,38],"9879677","Rapidwire",[437,42,38,432,63,38],"9879951",[439,42,38,432,440,38],"9880112","dfine",[442,42,38,250,203,38],"9880740",[444,42,38,432,440,38],"9880023",[446,42,18,447,63,38],"9880169","project\u002Fneutral\u002Fprivacy",[449,42,18,447,440,38],"9880235",[451,42,18,447,63,38],"9880332",[453,42,18,447,440,38],"9880411",[455,42,38,250,370,38],"9880656",[457,42,38,250,63,38],"9882344",[459,42,38,250,370,38],"9882464",[461,42,38,250,63,38],"9882572",[463,42,33,464,465,38],"9879831","project\u002Fpositive\u002Fpricing","tommoor",[172,45,18,447,173,38],[229,45,38,247,11,40],[73,469,33,470,74,38],8,"project\u002Fpositive\u002Fnone",[472,473,18,247,474,38],"9879217",9,"bgoers",[476,477,40,478,479,38],"9878897",10,"project\u002Fcritical\u002Fexecution","vosper",[232,477,38,481,11,40],"maker\u002Fneutral\u002Fexecution",[160,483,18,240,161,38],11,[485,486,33,276,487,38],"9878852",12,"aniketpant",[89,489,18,300,90,38],13,[491,492,18,242,493,38],"9878935",14,"deutronium",[495,492,38,242,11,40],"9878986",[497,492,33,292,493,38],"9879005",[499,492,18,240,500,38],"9879301","saosebastiao",[502,492,18,240,254,38],"9879522",[504,492,40,505,506,38],"9879671","project\u002Fcritical\u002Fprivacy","thwest",[508,492,18,447,254,38],"9880397",[510,492,40,505,506,38],"9886239",[512,513,33,276,514,38],"9879265",15,"fbr",[516,517,33,276,518,38],"9880028",16,"ChuckMcM",[520,521,38,305,286,38],"9879943",17,[523,521,38,432,524,38],"9880024","eevilspock",[526,521,38,432,286,38],"9880136",[528,521,38,432,506,38],"9886271",[530,521,38,432,286,38],"9891086",[213,31,40,278,214,38],[533,534,18,247,535,38],"9880430",19,"lmb",[537,538,18,447,539,38],"9879920",20,"bliti",[541,538,40,278,542,38],"9879934","eli",[544,34,33,545,546,38],"9878907","maker\u002Fpositive\u002Fnone","darrenbuckner",[220,548,18,247,221,38],22,[550,548,18,271,63,38],"9879211",[552,553,40,278,554,38],"9909107",23,"inoks",[149,556,18,557,150,38],24,"project\u002Fmixed\u002Fpricing",[559,560,18,561,562,38],"9880117",25,"project\u002Fmixed\u002Fperformance","dtertman",[564,560,18,565,63,38],"9882221","maker\u002Fneutral\u002Fperformance",[567,568,18,557,569,38],"9881506",26,"vpontis",[77,571,33,276,78,38],27,[573,571,38,313,574,38],"9878868","valarauca1",[576,571,38,577,578,38],"9878967","commenter\u002Fneutral\u002Fidea","netfire",[580,581,18,582,583,38],"9878927",28,"project\u002Fneutral\u002Fexecution","rpcope1",[585,581,18,481,63,38],"9878938",[128,587,33,292,129,38],29,[589,587,33,590,63,38],"9878950","maker\u002Fpositive\u002Fdesign",[592,593,38,305,594,38],"9880774",30,"ljk",[596,593,38,289,11,40],"9880799",[598,599,18,247,600,38],"9882516",31,"thedogeye",[602,603,18,481,604,38],"9878841",32,"wehadfun",[109,603,38,481,11,40],[607,603,18,247,574,38],"9879002",[609,603,33,610,63,38],"9879067","maker\u002Fpositive\u002Fidea",[612,603,18,240,102,38],"9879517",[614,603,38,250,63,38],"9880906",[616,603,18,481,617,38],"9879479","dmritard96",[619,620,33,545,621,38],"9880711",33,"talsnet",[623,624,18,582,625,38],"9883122",34,"Fudgel",[627,624,38,481,11,40],"9891872",[62,629,18,247,63,38],35,[],[632,637,642,647,652,657],{"id":633,"name":634,"points":635,"category":636},"9892049","Democracy.io by EFF",144,"web_saas",{"id":638,"name":639,"points":640,"category":641},"9876868","Durat.io",119,"dev_tools",{"id":643,"name":644,"points":645,"category":646},"9889057","Actor",110,"infrastructure",{"id":648,"name":649,"points":650,"category":651},"9892515","Nestor",87,"productivity",{"id":653,"name":654,"points":655,"category":656},"9859389","Captain401",83,"finance_crypto",{"id":658,"name":659,"points":660,"category":661},"9890566","GoWork",68,"languages",false,"v2",{"id":665,"name":5,"line":6,"ai":662,"cat":20,"year":13,"points":14,"comments":15,"rec":28,"s":29,"top":18,"kw":666,"maker":11,"domain":10,"tier":19,"attempts":38,"strip":667,"url":9,"mix":668,"praise":117,"objection":138,"sub":21},9878597,[24,25,26,27],"2412424100000101525130305344150142545344",[31,32,33,34],1793990927567]