[{"data":1,"prerenderedAt":401},["ShallowReactive",2],{"project-11517667":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":27,"sentiment":28,"stance_mix":29,"scored_comments":34,"aspects":35,"strip":44,"post_text":46,"what":47,"said":68,"maker_in_thread":163,"shape":173,"grid":178,"attempts":359,"same_week":364,"maker_shows":164,"maker_hidden":393,"reader_version":394,"card":395},"11517667","FIND","an indoor positioning system for smartphones and laptops","title","Show HN: FIND – an indoor positioning system for smartphones and laptops","https:\u002F\u002Fgithub.com\u002Fschollz\u002Ffind","github.com","qrv3w",1460952423,2016,183,72,158,2264,7,"notable","infrastructure","indoor positioning","other",[21,24,25,26],"wifi fingerprinting","naive bayes","home automation","curious",0.029,{"positive":30,"neutral":31,"mixed":32,"critical":33},6,18,1,8,33,{"idea":36,"docs":38,"performance":40,"execution":42,"design":43},{"positive":37,"critical":30},3,{"positive":32,"critical":39},0,{"positive":41,"critical":41},2,{"positive":39,"critical":39},{"positive":39,"critical":39},[37,39,39,39,37,39,39,37,37,37,39,37,45,32,37,39,32,39,37,37,32,39,39,32,32,39,45,37,37,37,39,45,37,39,45,37,37,32,37,45],5,null,{"problem":48,"audience":46,"pricing":46,"motivation":58,"time_to_build":46,"stack":65,"openness":66,"stage":67,"team_size":67},{"value":49,"source":50,"evidence":51},"Locating devices indoors without extra hardware by using nearby WiFi access points","inferred",[52,55],{"id":53,"by":11,"text":54},"11519051","> it's a parasitic radar system That's an accurate description, though I'd avoid the negative terminology. The system does derive its data from nearby WiFi routers, but it is in…",{"id":56,"by":11,"text":57},"11519064","Right. Bluetooth beacons are a piece of hardware you would have to buy. Basically this tries to accomplish the same thing with just software. Here there is no hardware other than…",{"value":59,"source":60,"evidence":61},"Home automation is the maker's main goal","maker",[62],{"id":63,"by":11,"text":64},"11519058","Home automation has always been my main goal. I've been working with some electronic devices as you mentioned. For those interested, Sparkfun has \"The Thing\":…",[],"open_source","unknown",{"praise":69,"objections":89,"requests":114,"questions":127,"alternatives":142},[70,82],{"value":71,"source":72,"evidence":73},"Cool, open-source take on indoor positioning","commenter",[74,78],{"id":75,"by":76,"text":77},"11518472","asadlionpk","Cool project. I have tried using both wifi and IMU motion sensors for mapping indoor and it's not really that impressive yet. This is still a very hard problem to solve. Google…",{"id":79,"by":80,"text":81},"11520062","pavel_lishin","Awesome. I tried creating something like this to help get around our very confusing corporate headquarters, but gave up. I will almost certainly use this now!",{"value":83,"source":72,"evidence":84},"Accuracy around 10 square feet is impressive",[85],{"id":86,"by":87,"text":88},"11518240","lhaussknecht","They claim a typical accuracy of 10 square feet (\u003C 1 square meter) which would be really really good. Even systems with beacons are not better.",[90,100,107],{"value":91,"source":72,"evidence":92},"Needs an Android device carried by each person",[93,97],{"id":94,"by":95,"text":96},"11520981","watty","Motion detectors have a variety of usage, outdoor lighting, indoor room lighting, grocery store fridge lighting, etc. FIND is a bit more specialized because of the huge drawback…",{"id":98,"by":95,"text":99},"11521049","I love home automation but unfortunately can't think of any beneficial use-cases. This would require each person being tracked to have an android based device with wifi enabled…",{"value":101,"source":72,"evidence":102},"Breaks if a router moves",[103],{"id":104,"by":105,"text":106},"11517941","fabulist","This is billed as a replacement for motion sensors in home automation. Though it does beg the question, \"what if someone moves their router?\"",{"value":108,"source":72,"evidence":109},"Motion sensors are simpler and cheaper for home lighting",[110],{"id":111,"by":112,"text":113},"11518124","pavs","It adds a lot of complexity and point of failure for a system that I can install for 15 bucks from most hardware stores (with a solid track record).",[115,120],{"value":116,"source":72,"evidence":117},"Support for iPhone and non-Android clients",[118,119],{"id":94,"by":95,"text":96},{"id":98,"by":95,"text":99},{"value":121,"source":72,"evidence":122},"Lower resolution details in the description",[123],{"id":124,"by":125,"text":126},"11518473","greggman","~10sq feet in resolution Seems like that should be in the first 3 lines of the description, not near the end of the FAQ. Very cool project.",[128,135],{"value":129,"source":72,"evidence":130},"How the Naive Bayes classification works",[131],{"id":132,"by":133,"text":134},"11526957","OrangeTux","I've looked through the code to get a better understanding of this process, but I couldn't get my head around it. Could you give a more detailed description of this process?",{"value":136,"source":72,"evidence":137},"Whether fingerprints can be shared between devices",[138],{"id":139,"by":140,"text":141},"11517816","magic_man","Once finger printing has been done can that info be shared with other cell phones?",[143,150,156],{"value":144,"source":72,"evidence":145},"Bluetooth LE beacons",[146],{"id":147,"by":148,"text":149},"11518920","onecooldev24","Can some one explain me, why just not use bluetooth LE? I understand you need BLE beacons, but any other reason.",{"value":151,"source":72,"evidence":152},"Motion sensors (PIR)",[153],{"id":154,"by":112,"text":155},"11517928","Motion sensored room light has been available for at least 15-20 years.",{"value":157,"source":72,"evidence":158},"Inertial navigation",[159],{"id":160,"by":161,"text":162},"11518085","ccozan","What is wrong with inertial navigation? Just need to mark a starting poing ( like, your house door ) and then just walk around and mark the places. I've seen in the past some…",{"comments":164,"answered":45,"key":165},13,[166,167,170],{"id":53,"text":54},{"id":168,"text":169},"11519473","I thought it might. Never heard it until now!",{"id":171,"text":172},"11528702","Assuming your the same OrangeTux I talked to in the Gitter chat[1], here's my answers (from Gitter chat) for other who have questions: > How do you compare the current…",{"commenters":174,"max_depth":175,"maker_replies":164,"first_comment_mins":176,"lifespan_hours":177},35,9,43,41,[179,182,186,189,192,194,196,198,200,203,204,207,208,210,212,214,217,221,223,225,229,231,234,238,239,240,244,247,251,252,254,256,258,261,264,267,270,271,274,277,279,281,282,286,289,294,297,299,301,304,307,308,310,311,312,315,317,318,321,323,325,328,331,333,336,339,344,347,350,352,355,357],[180,39,37,181,105,39],"11517920","project\u002Fneutral\u002Fidea",[183,39,39,184,185,39],"11518957","commenter\u002Fneutral\u002Fidea","rasz_pl",[187,39,39,184,188,39],"11518972","RottenHuman",[190,39,39,184,191,39],"11519665","PaulHoule",[193,39,39,184,105,39],"11519397",[195,39,39,184,185,39],"11519695",[197,39,39,184,105,39],"11523236",[199,39,37,181,87,39],"11518983",[201,39,37,181,202,39],"11519006","mikecb",[53,39,39,181,11,32],[205,39,39,206,105,39],"11519402","commenter\u002Fneutral\u002Fnone",[168,39,39,206,11,32],[209,39,39,206,191,39],"11519642",[132,39,37,211,133,39],"project\u002Fneutral\u002Fdocs",[171,39,39,213,11,32],"maker\u002Fpositive\u002Fdocs",[215,32,37,181,216,39],"11518206","roel_v",[218,32,37,219,220,39],"11518297","project\u002Fneutral\u002Fperformance","jakobegger",[63,32,39,222,11,32],"other\u002Fneutral\u002Fnone",[224,32,39,222,220,39],"11519772",[226,41,45,227,228,39],"11517785","project\u002Fpositive\u002Fidea","logibly",[154,41,32,230,112,39],"project\u002Fcritical\u002Fidea",[232,41,45,227,233,39],"11517940","zyxley",[235,41,39,236,237,39],"11518048","commenter\u002Fcritical\u002Fidea","spdustin",[104,41,32,230,105,39],[111,41,32,230,112,39],[241,41,37,242,243,39],"11518429","project\u002Fmixed\u002Fidea","baruch",[245,41,39,222,246,39],"11519163","Kliment",[248,41,39,249,250,39],"11519330","commenter\u002Fpositive\u002Fidea","laumars",[94,41,32,230,95,39],[253,41,39,184,250,39],"11521083",[255,41,39,236,95,39],"11521207",[257,41,39,184,250,39],"11521796",[259,41,37,181,260,39],"11518252","JimmyAustin",[262,41,39,263,11,32],"11519081","maker\u002Fneutral\u002Fidea",[265,41,37,266,105,39],"11519415","project\u002Fneutral\u002Fnone",[268,41,39,269,11,32],"11519495","maker\u002Fneutral\u002Fnone",[98,41,32,230,95,39],[272,41,39,222,273,39],"11517948","glibgil",[275,41,39,276,250,39],"11518398","other\u002Fneutral\u002Fidea",[278,41,39,222,112,39],"11518806",[280,41,39,184,250,39],"11519159",[160,37,37,181,161,39],[283,37,32,284,285,39],"11518223","project\u002Fcritical\u002Fperformance","hansjorg",[287,37,32,284,288,39],"11518361","creshal",[290,291,39,292,293,39],"11518112",4,"other\u002Fcritical\u002Fidea","woodcut",[295,291,39,276,296,39],"11518351","PakG1",[86,45,45,298,87,39],"project\u002Fpositive\u002Fperformance",[300,45,37,219,288,39],"11518366",[302,45,39,303,11,32],"11519087","maker\u002Fneutral\u002Fperformance",[305,45,37,303,306,39],"11530214","thenomad",[147,30,37,181,148,39],[309,30,39,184,87,39],"11518975",[56,30,39,263,11,32],[75,18,37,181,76,39],[313,18,39,314,11,32],"11519068","maker\u002Fpositive\u002Fidea",[124,33,45,316,125,39],"project\u002Fpositive\u002Fdocs",[139,175,37,181,140,39],[319,175,37,181,320,39],"11517900","Sanddancer",[322,175,39,206,185,39],"11519050",[324,175,39,206,105,39],"11519461",[326,175,39,327,185,39],"11523840","commenter\u002Fneutral\u002Fperformance",[329,175,45,298,330,39],"11519469","timlyo",[332,175,39,327,185,39],"11523867",[334,175,37,211,335,39],"11517919","iamflimflam1",[337,175,39,338,11,32],"11519121","maker\u002Fneutral\u002Fexecution",[340,341,37,342,343,39],"11519933",10,"project\u002Fneutral\u002Fexecution","11thEarlOfMar",[345,341,39,346,11,32],"11520101","maker\u002Fpositive\u002Fexecution",[348,349,32,230,233,39],"11517950",11,[351,349,39,314,11,32],"11519093",[353,349,37,354,233,39],"11522261","project\u002Fneutral\u002Fdesign",[356,349,39,227,11,32],"11522397",[79,358,45,227,80,39],12,[360,363],{"id":361,"t":362,"points":291,"comments":37},"10689778",1449499844,{"id":4,"t":12,"points":14,"comments":15},[365,370,375,380,383,388],{"id":366,"name":367,"points":368,"category":369},"11520378","Barnacl.es",382,"productivity",{"id":371,"name":372,"points":373,"category":374},"11509835","PodcastRank",367,"consumer_social",{"id":376,"name":377,"points":378,"category":379},"11527156","BedquiltDB",145,"data",{"id":381,"name":382,"points":378,"category":374},"11527541","Simple Postcard",{"id":384,"name":385,"points":386,"category":387},"11536216","autochecker",142,"dev_tools",{"id":389,"name":390,"points":391,"category":392},"11527347","Painless1099",92,"web_saas",false,"v2",{"id":396,"name":5,"line":6,"ai":393,"cat":20,"year":13,"points":14,"comments":15,"rec":27,"s":397,"top":18,"kw":398,"maker":11,"domain":10,"tier":19,"attempts":41,"strip":399,"url":9,"mix":400,"praise":71,"objection":91,"sub":21},11517667,0.03,[21,24,25,26],"3000300333035130103310011053330530533135",[30,31,32,33],1794036543429]