[{"data":1,"prerenderedAt":309},["ShallowReactive",2],{"project-14332479":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":34,"aspects":35,"strip":42,"post_text":44,"what":45,"said":62,"maker_in_thread":138,"shape":149,"grid":154,"attempts":270,"same_week":271,"maker_shows":300,"maker_hidden":301,"reader_version":302,"card":303},"14332479","Howmanypeoplearearound","Use wifi to calculate number of people around","title","Show HN: Howmanypeoplearearound – Use wifi to calculate number of people around","https:\u002F\u002Fgithub.com\u002Fschollz\u002Fhowmanypeoplearearound","github.com","qrv3w",1494702662,2017,199,47,165,2242,8,"notable","security_privacy","wifi sniffing","cli",[24,25,26,27,21],"wifi monitoring","people counting","monitor mode","mac address","curious",-0.152,{"positive":31,"neutral":32,"mixed":31,"critical":33},0,16,4,20,{"idea":36,"privacy":38,"performance":40,"execution":41},{"positive":31,"critical":37},1,{"positive":31,"critical":39},2,{"positive":31,"critical":37},{"positive":31,"critical":31},[43,31,31,31,31,31,31,31,43,31,31,43,37,43,43,43,31,37,43,31,43,43,31,43,31,43,31,31,31,31,31,43,31,43,37,43,31,37,31,43],3,null,{"problem":46,"audience":44,"pricing":44,"motivation":44,"time_to_build":44,"stack":59,"openness":60,"stage":61,"team_size":61},{"value":47,"source":48,"evidence":49},"Estimating how many people are around by sniffing WiFi signals from phones","inferred",[50,52,56],{"id":51},"post",{"id":53,"by":54,"text":55},"14333518","d33","> $ howmanypeoplearearound > Specify WiFi adapter (use ifconfig to determine): wlp4s0 > [==================================================] 100% 0s left > Found no signals, are…",{"id":57,"by":11,"text":58},"14333546","What kind of WiFi chip do you have? Make sure it supports monitor mode (if should list \"monitor\" when running `iw list`). Although, for reasons I don't understand, this may not…",[],"open_source","unknown",{"praise":63,"objections":64,"requests":112,"questions":124,"alternatives":137},[],[65,80,90,97],{"value":66,"source":67,"evidence":68},"Many people have smartphones, so the count is inaccurate or only covers part of the population","commenter",[69,73,76],{"id":70,"by":71,"text":72},"14333677","olalonde","Unrelated but how accurate is that 70% statistic? I would have expected that number to be much higher.",{"id":74,"by":11,"text":75},"14333742","Pew Research Center says ~77% US adults own smartphones. [1] The director at Pew also tweeted a breakdown by country which shows a lot of variance. [2] Thus, this script won't…",{"id":77,"by":78,"text":79},"14340669","helb","Probably not very accurate, regardless of how many people have smartphones. Unless you know how big that \"around\" is.",{"value":81,"source":67,"evidence":82},"MAC address randomization makes phones harder to detect",[83,87],{"id":84,"by":85,"text":86},"14333527","mzakharo1","what about about mac address randomization?????",{"id":88,"by":11,"text":89},"14333558","For iPhones this only happens when un-associated [1] so this script will probably underestimate the count in public spaces. Although, I'm not sure whether the randomization…",{"value":91,"source":67,"evidence":92},"Routers and common manufacturer OUIs are mistaken for phones",[93],{"id":94,"by":95,"text":96},"14341357","irfan","Is there a better way to check if an OUI is being used by a mobile phone or a router? e.g. There are plenty of huawei\u002Fapple routers and if one of them is in your neighborhood,…",{"value":98,"source":67,"evidence":99},"Sniffing others' wifi traffic may be illegal and raises privacy concerns",[100,104,108],{"id":101,"by":102,"text":103},"14335484","alexchamberlain","I think that'd be illegal under Misuse of Computers in the UK...",{"id":105,"by":106,"text":107},"14337288","peterwwillis","Actually, it doesn't appear to be illegal (but IANAL). The UK act applies mostly to trying to gain unathorized access to a computer system or network. If you put up your own wifi…",{"id":109,"by":110,"text":111},"14335538","adolph","Yes and no. Imho the issue at hand is that of a piece to a mosaic of over time and other sensor data. For example, an important piece of data to pharmaceutical companies is which…",[113,120],{"value":114,"source":67,"evidence":115},"Add Bluetooth support and correlate Bluetooth and WiFi MACs",[116],{"id":117,"by":118,"text":119},"14333983","contingencies","Bluetooth equivalent would be cool, then pairing bluetooth and wifi MACs based on temporal correlation. If one changes you can infer from the other. Over time you could split it…",{"value":121,"source":67,"evidence":122},"Distinguish routers from phones better",[123],{"id":94,"by":95,"text":96},[125,130],{"value":126,"source":67,"evidence":127},"Why no signals captured on some WiFi chips in monitor mode",[128,129],{"id":53,"by":54,"text":55},{"id":57,"by":11,"text":58},{"value":131,"source":67,"evidence":132},"Does it scan all channels",[133],{"id":134,"by":135,"text":136},"14335358","notdang","Does this script scan all the channels or just one?",[],{"comments":139,"answered":140,"key":141},9,6,[142,143,146],{"id":74,"text":75},{"id":144,"text":145},"14343015","Basically the OUI's I selected are from the ones with the top market share in the United States [1]. The marketshare is totally different in countries like India or Vietnam, so…",{"id":147,"text":148},"14336708","I haven't done movement profiles, but I used something similar to track smartphone locations with a bunch of Raspberry Pis scattered around. [1] [1]…",{"commenters":150,"max_depth":151,"maker_replies":139,"first_comment_mins":152,"lifespan_hours":153},33,7,264,234,[155,157,161,164,167,170,173,176,180,183,187,191,194,197,199,203,204,206,209,210,213,215,217,219,222,225,227,228,230,231,233,235,239,241,244,247,250,251,254,256,258,260,262,264,265,267,268],[117,31,43,156,118,31],"project\u002Fneutral\u002Fidea",[158,31,31,159,160,31],"14334145","commenter\u002Fneutral\u002Fnone","sattoshi",[162,31,31,159,163,31],"14334272","pyromine",[165,31,31,159,166,31],"14334957","codefined",[168,31,31,159,169,31],"14334988","kopijahe",[171,31,31,159,172,31],"14335012","rocqua",[174,31,31,159,175,31],"14335081","oneeyedpigeon",[177,31,31,178,179,31],"14335749","commenter\u002Fneutral\u002Fprivacy","remx",[181,31,31,159,182,31],"14335228","doubleplusgood",[184,37,43,185,186,31],"14333766","project\u002Fneutral\u002Fprivacy","flor1s",[188,37,31,189,190,31],"14334282","other\u002Fneutral\u002Fprivacy","blowski",[192,37,31,189,193,31],"14334564","timrobinson",[195,37,43,185,196,31],"14334881","zacmps",[198,37,31,159,196,31],"14334884",[200,37,37,201,202,31],"14335372","project\u002Fcritical\u002Fprivacy","golergka",[109,37,43,185,110,31],[70,39,43,205,71,31],"project\u002Fneutral\u002Fnone",[207,39,43,205,208,31],"14333679","asafira",[74,39,31,205,11,37],[211,39,43,205,212,31],"14334082","Kali909",[77,39,37,214,78,31],"project\u002Fcritical\u002Fperformance",[94,43,43,216,95,31],"project\u002Fneutral\u002Fexecution",[144,43,31,218,11,37],"maker\u002Fneutral\u002Fnone",[220,33,43,156,221,31],"14336078","pagnol",[223,33,43,156,224,31],"14336343","phamilton",[226,33,31,159,221,31],"14336760",[147,33,31,156,11,37],[53,229,43,216,54,31],5,[57,229,31,216,11,37],[232,229,43,216,54,31],"14335627",[234,229,31,216,11,37],"14336720",[236,140,31,237,238,31],"14335260","other\u002Fneutral\u002Fnone","godmodus",[240,151,31,237,175,31],"14335079",[242,151,31,159,243,31],"14335151","bjackman",[245,151,31,178,246,31],"14400791","Zenbit_UX",[248,151,31,237,249,31],"14336716","cityhall",[134,18,43,216,135,31],[252,18,31,159,253,31],"14335461","pmx",[255,18,43,216,246,31],"14400806",[84,139,37,257,85,31],"project\u002Fcritical\u002Fidea",[88,139,31,259,11,37],"project\u002Fneutral\u002Fperformance",[261,139,43,156,106,31],"14333706",[263,139,31,159,11,37],"14333738",[101,139,37,201,102,31],[266,139,31,185,11,37],"14336762",[105,139,43,185,106,31],[269,139,31,218,11,37],"14337795",[],[272,277,282,287,290,295],{"id":273,"name":274,"points":275,"category":276},"14343967","FSQL",341,"dev_tools",{"id":278,"name":279,"points":280,"category":281},"14314875","SQueaLy",163,"data",{"id":283,"name":284,"points":285,"category":286},"14338708","Nginx Sysguard",161,"infrastructure",{"id":288,"name":289,"points":285,"category":276},"14360921","3DC.io",{"id":291,"name":292,"points":293,"category":294},"14330635","Gitorials",147,"learning_science",{"id":296,"name":297,"points":298,"category":299},"14326166","Verb Master",124,"languages",13,false,"v2",{"id":304,"name":5,"line":6,"ai":301,"cat":20,"year":13,"points":14,"comments":15,"rec":28,"s":305,"top":18,"kw":306,"maker":11,"domain":10,"tier":19,"attempts":31,"strip":307,"url":9,"mix":308,"praise":-1,"objection":66,"sub":21},14332479,-0.15,[24,25,26,27,21],"3000000030031333013033030300000303130103",[31,32,31,33],1794036555298]