[{"data":1,"prerenderedAt":617},["ShallowReactive",2],{"project-18035283":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":20,"keywords":22,"reception":28,"sentiment":29,"stance_mix":30,"scored_comments":35,"aspects":36,"strip":44,"post_text":48,"what":49,"said":72,"maker_in_thread":148,"shape":150,"grid":154,"attempts":578,"same_week":579,"maker_shows":33,"maker_hidden":609,"reader_version":610,"card":611},"18035283","Hacking slot machines","Hacking slot machines with a buttonhole camera and brute-force search","title","Show HN: Hacking slot machines with a buttonhole camera and brute-force search","https:\u002F\u002Fgithub.com\u002Ftensor8\u002Fhacking_slot_machines","github.com","IsONoDOn",1537476075,2018,421,151,38,2155,2,"legend","other","cheating tool for trivia gaming machine",[23,24,25,26,27],"slot machine","trivia","brute force","ocr","raspberry pi","curious",-0.093,{"positive":31,"neutral":32,"mixed":33,"critical":34},9,45,1,10,65,{"design":37,"performance":39,"privacy":40,"idea":41,"execution":42,"docs":43},{"positive":38,"critical":18},0,{"positive":33,"critical":18},{"positive":38,"critical":38},{"positive":18,"critical":18},{"positive":33,"critical":38},{"positive":38,"critical":33},[33,45,46,46,46,45,38,38,38,45,45,45,45,46,33,45,45,38,38,45,45,33,45,45,45,45,38,45,45,45,18,46,47,45,45,47,18,33,38,38],3,5,4,null,{"problem":48,"audience":48,"pricing":48,"motivation":48,"time_to_build":48,"stack":50,"openness":70,"stage":71,"team_size":71},[51,59],{"value":52,"source":53,"evidence":54},"C++","commenter",[55],{"id":56,"by":57,"text":58},"18038969","hn_username","Looking at the cpp code, could you describe the prototype\u002Fpattern image? What sort of prep do you do to make it generally recognizable as the questions\u002Fanswers change?",{"value":60,"source":53,"evidence":61},"Raspberry Pi",[62,66],{"id":63,"by":64,"text":65},"18035858","splonk","Related: there are various bots for HQ Trivia that do similar things that have come up on HN before. Here's one with a bit of a writeup:…",{"id":67,"by":68,"text":69},"18036770","mfgs","Raspberry Pi is slow for image processing. You can probably greatly increase speed if you take smaller images or downsize them before processing.","open_source","unknown",{"praise":73,"objections":84,"requests":107,"questions":120,"alternatives":136},[74],{"value":75,"source":53,"evidence":76},"Clever and interesting project",[77,80],{"id":78,"by":57,"text":79},"18036622","This is a really clever and interesting project - thanks for sharing. How on earth did you come across the ROM for this game?",{"id":81,"by":82,"text":83},"18035851","stilley2","Cool project (legal\u002Fethical issues aside)! My big question is why bother with OCR at all? Presumably you can construct a representation of the screen for each question ahead of…",[85,100],{"value":86,"source":53,"evidence":87},"Likely illegal cheating, risk of jail, especially in Nevada",[88,92,96],{"id":89,"by":90,"text":91},"18035598","rbobby","Yikes. Using this is almost certainly illegal (cheating) in every jurisdiction, and could have significant penalties. This video and the github repository itself could be a…",{"id":93,"by":94,"text":95},"18036663","downandout","Just FYI everyone, using any electronic device to gain an edge at any regulated gambling game is a felony in Nevada, and it is one that they take incredibly seriously. If you are…",{"id":97,"by":98,"text":99},"18036970","everdev","Applaud the ambition, but please be careful. People go to jail in the US for trying to hack or cheat at gambling games.",{"value":101,"source":53,"evidence":102},"Casino surveillance makes it risky",[103],{"id":104,"by":105,"text":106},"18040096","nimbius","be careful with this hack and similar ones...real-life casinos have an entire SOC monitoring absolutely everything on the floor and in the parking lot. Speaking from experience:…",[108,112],{"value":109,"source":53,"evidence":110},"Explain how the ROM was obtained",[111],{"id":78,"by":57,"text":79},{"value":113,"source":53,"evidence":114},"Explain the image prototype and accuracy",[115,116],{"id":56,"by":57,"text":58},{"id":117,"by":118,"text":119},"18035528","cwkoss","Very cool! What accuracy rate were you able to achieve?",[121,125],{"value":122,"source":53,"evidence":123},"Why use OCR instead of matching screen images to a prebuilt database",[124],{"id":81,"by":82,"text":83},{"value":126,"source":53,"evidence":127},"Can you just memorize the questions instead",[128,132],{"id":129,"by":130,"text":131},"18035885","foota","So... Can you not just memorize the questions?",{"id":133,"by":134,"text":135},"18035924","toast0","If you have all the questions and answers; couldn't you just study them? It's not as fun, but probably just as effective, depending on your ability to retain useless knowledge.",[137,141],{"value":138,"source":53,"evidence":139},"HQ Trivia bots",[140],{"id":63,"by":64,"text":65},{"value":142,"source":53,"evidence":143},"Word Soup cheating program",[144],{"id":145,"by":146,"text":147},"18035810","JoeSmithson","I wrote a similar program a while ago to cheat at Word Soup which is another of the games on these machines. http:\u002F\u002Fchris-knott.appspot.com\u002Fprojects\u002Fword_soup.html They are…",{"comments":38,"answered":38,"key":149},[],{"commenters":151,"max_depth":34,"maker_replies":38,"first_comment_mins":152,"lifespan_hours":153},106,28,59,[155,159,163,167,171,175,178,181,184,187,191,194,197,200,202,205,206,209,213,216,219,221,224,227,230,233,235,236,239,242,245,248,251,254,256,260,263,266,269,272,275,277,281,285,287,292,295,297,300,303,306,310,313,315,318,323,325,328,331,332,334,337,339,342,345,348,351,354,357,360,363,366,369,372,375,377,379,382,385,388,391,393,396,399,401,403,406,408,411,414,417,420,422,424,427,430,433,436,439,442,446,449,452,454,456,459,461,464,467,469,471,475,477,479,482,485,487,489,491,493,497,500,502,506,508,510,513,518,521,524,527,531,533,537,541,546,550,553,555,558,561,563,566,569,573,575],[156,38,45,157,158,38],"18037028","project\u002Fneutral\u002Fnone","lysp",[160,38,33,161,162,38],"18037490","project\u002Fcritical\u002Fdesign","adrianN",[164,38,38,165,166,38],"18037580","other\u002Fneutral\u002Fnone","jakobegger",[168,38,38,169,170,38],"18037716","commenter\u002Fneutral\u002Fnone","jhanschoo",[172,38,38,173,174,38],"18037813","commenter\u002Fcritical\u002Fnone","YokoZar",[176,38,45,157,177,38],"18039122","justinpaulson",[179,38,38,169,180,38],"18039792","SmellyGeekBoy",[182,38,38,165,183,38],"18040432","gadders",[185,38,38,165,186,38],"18045921","acct1771",[188,38,46,189,190,38],"18038501","project\u002Fpositive\u002Fnone","cgag",[192,38,45,157,193,38],"18038972","spappal",[195,38,38,169,196,38],"18038998","abluecloud",[198,38,46,189,199,38],"18039188","Elte",[201,38,38,165,177,38],"18039115",[203,38,38,165,204,38],"18040473","tgarv",[145,33,45,157,146,38],[207,33,38,208,64,38],"18035917","other\u002Fneutral\u002Fpricing",[210,33,46,211,212,38],"18036115","maker\u002Fpositive\u002Fnone","peteretep",[214,33,33,215,94,38],"18036741","project\u002Fcritical\u002Fperformance",[217,33,45,218,146,38],"18037043","maker\u002Fneutral\u002Fnone",[220,33,46,211,94,38],"18037085",[222,18,38,165,223,38],"18036907","wst_",[225,18,38,165,226,38],"18037541","rmetzler",[228,18,38,165,229,38],"18040922","dan000892",[231,18,38,165,232,38],"18037654","nikolay",[234,18,38,165,223,38],"18039681",[63,45,38,165,64,38],[237,45,38,165,238,38],"18036477","applecrazy",[240,45,38,165,241,38],"18036717","bdod6",[243,45,38,165,244,38],"18036727","kregasaurusrex",[246,45,38,165,247,38],"18036817","lathiat",[249,45,38,165,250,38],"18037106","driverdan",[252,45,38,165,253,38],"18036774","pascoej",[255,47,38,165,64,38],"18035808",[257,46,45,258,259,38],"18035790","maker\u002Fneutral\u002Fprivacy","malwrar",[261,46,45,218,262,38],"18035822","jamesough",[264,46,38,169,265,38],"18035889","nyxxie",[267,46,38,169,268,38],"18036289","jnaddef",[270,46,45,218,271,38],"18037051","knn",[273,46,45,258,274,38],"18036481","available",[276,46,45,258,262,38],"18039407",[278,279,45,258,280,38],"18035896",6,"cdubzzz",[282,279,38,283,284,38],"18036444","commenter\u002Fneutral\u002Fprivacy","flocial",[286,279,45,258,262,38],"18039333",[288,289,45,290,291,38],"18035537",7,"project\u002Fneutral\u002Fidea","p1necone",[293,289,38,165,294,38],"18035573","owlninja",[296,289,38,165,262,38],"18035622",[298,289,38,165,299,38],"18035628","barbecue_sauce",[301,289,38,165,302,38],"18035689","dagw",[304,289,38,165,305,38],"18035768","Timmah",[307,289,46,308,309,38],"18036137","project\u002Fpositive\u002Fidea","dymk",[311,289,33,161,312,38],"18036157","albertgoeswoof",[314,289,38,165,262,38],"18035595",[316,289,45,157,317,38],"18036253","person_of_color",[319,320,45,321,322,38],"18036272",8,"project\u002Fneutral\u002Fprivacy","nneonneo",[324,320,45,321,262,38],"18036305",[326,320,45,321,327,38],"18036309","yadaeno",[329,320,45,321,330,38],"18036311","brian-armstrong",[133,31,45,290,134,38],[333,31,45,290,262,38],"18035930",[335,31,38,165,336,38],"18036419","petercooper",[338,31,38,165,262,38],"18036446",[340,31,38,165,341,38],"18036487","perl4ever",[343,31,38,169,344,38],"18037240","braythwayt",[346,31,38,165,347,38],"18037475","vntok",[349,31,38,165,350,38],"18037643","wingerlang",[352,31,38,165,353,38],"18038733","feintruled",[355,31,38,165,356,38],"18038877","tragomaskhalos",[358,31,38,165,359,38],"18037484","philhippus",[361,34,38,165,362,38],"18037604","LeonM",[364,34,38,165,365,38],"18041469","hnu0847",[97,367,45,368,98,38],11,"project\u002Fmixed\u002Fnone",[81,370,45,371,82,38],12,"project\u002Fneutral\u002Fexecution",[373,370,45,371,374,38],"18035931","dclowd9901",[376,370,45,371,262,38],"18035980",[378,370,38,169,82,38],"18036592",[380,370,38,169,381,38],"18038135","kwhitefoot",[89,383,33,384,90,38],13,"project\u002Fcritical\u002Fnone",[386,383,38,169,387,38],"18035667","Someone1234",[389,383,38,165,390,38],"18035746","lgas",[392,383,38,169,387,38],"18035819",[394,383,45,157,395,38],"18035829","Asooka",[397,383,38,165,398,38],"18038764","pbhjpbhj",[400,383,38,165,262,38],"18035881",[402,383,38,165,305,38],"18035762",[404,383,45,290,405,38],"18035792","TylerE",[407,383,38,169,387,38],"18035824",[409,383,38,165,410,38],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