
yantra gurtimpu code

printer steganography, ello dots, tracking dots ledhaa secret dots anie kooda piluvabade meshin identification code (mike) anedi digital watermark, idhi konni rangu lazer printerlu mariyu kaapeerlu prati mudrita pageelo vadilivestaayi, idhi patraanni mudrinchadaaniki upayoginchina parikaranni gurtinchadaaniki mariyu srushtikartaku aadhaaraalanu ivvadaaniki anumatistundi. 1980la madhyalo gerax mariyu connon abhivruddhi chesina daani uniki 2004loe matrame bahirangamaindi. 2018loe, saastravettalu visilbloyerlu tama panini prachurinchadaaniki maddatugaa mudranalanu anaamakaparachadaaniki gopyata softwarenu abhivruddhi chesaaru.
charitra.
1980la madhyalo gerax mottam mudrana praantamloo vistarinchi unna chinna chukkala dwara suchinchabade pratyaekamaina sankhya kosam encoding yantraamgaaniki maargadarsakatvam vahinchindi. gerax yantra gurtimpu kodnu abhivruddhi chesindi "nakilee notla kosam vaati rangu kaapeelanu upayoginchavacchane bhayanni tagginchadaaniki" mariyu yuu andukundi.ess. coppy cheyabadina ledhaa mudrinchina patram yokka muulaanni gurtinchadaaniki pasupu chukkala vadakanni vivarinche patent nem. 5515451.
october 2004loe dutch adhikarulu cannon colour lazer printernu upayoginchina nakileevaarini gurtinchadaaniki upayoginchinappudu prajalaku mike gurinchi modatisaarigaa telisindi. november 2004loe, "pisi varald" konni printerlalo dasabdaluga yantra gurtimpu code upayoginchabadutundani nivedinchindi, idhi nakileevaarini gurtinchadaaniki mariyu track cheyadaaniki chatta amalu samsthalanu anumatistundi. central byaank nakilee nirodhaka brundam (cbcdg) eee lakshanaanni abhivruddhi chesinatlu khandinchindi.
2005loe, poura hakkula samuuham electronic frontier foundation (eff) namuunaala mudranalanu pampamani prajalanu prothsahinchindi, aaa taruvaata namuunaanu decode chesindi. vividha tayaareedaarulu mariyu namuunaala nundi vistruta shreni printerlapy eee namuunaa pradarsinchabadindi. rangu lazer printerla tayaareedaarulandaruu aaa printerla avtput forensicga gurtinchadaginadani nirdhaarinchadaaniki prabhutvaalato rahasya oppandam kudurchukunnarani vaaru gatamlo foya dwara andukunna patraalu suuchimchaayani 2015loe ef perkondi.
2007loe european paarlamentunu gopyatapai daadi gurinchi adigaru.
saanketika amsaalu.
eee namoonaalo pasupu chukkala chukkala-matricks spread untundi, veetini kevalam kantitho chudalemu. chukkalu millimetres padava vanthu vyaasam (0.004 ") mariyu sumaru oka millimeter (0.039") antaraanni kaligi untaayi. vaati amarika parikaram yokka krama sankhya, mudrana thedhee mariyu samayanni encode chestundi mariyu lopaalu sambhavinchinappudu mudrana praantam antataa aneka saarlu punaraavrutam cheyabadutundi. udaaharanaku, code oka chadarapu ledhaa shatkona namoonaalo 8x16 chukkalanu kaligi unte, adhi sumaru uparitalampai vistarinchi, sumaru 150 saarlu a4 kaagitam parimaanam gala sheet meeda kanipistundi. anduvalla, sakalaalu ledhaa saaraamsaalu matrame andubaatulo unnappatikee dheenini vislaeshimchavachchu. konni printerlu yaadruchchika binduvula meghalalo pasupu chukkalanu amarchutaayi.
2005loe gandaragolam computer club prakaram, rangu printerlu kodnu 32x16 chukkala maatrukalo vadilivestaayi, tadwara 64 baitla daetaanu (64x8) nilva cheyagalavu.
gurtinchina paejeela vaipu drushtini aakarshinchina atikoddi mandhi tayaareedaarulalo gerax okati, utpatti vivaranalo ilaa paerkontuu, "digital rangu mudrana vyavasthalo aneka prabhutvaala avasaralaku anugunamgaa nakilee nirodhaka gurtimpu mariyu byaanku notu gurtimpu vyavastha amarchabadi undhi. prati kaapeeni oka lebultho gurtinchaali, idhi avasaramaite, adhi srushtinchabadina mudrana vyavasthanu gurtinchadaaniki anumatistundi. eee code saadhaarana paristhitulalo kanipinchadu."
2018loe, thu dresdenloni saastravettalu 18 tayaareedaarula nundi 106 printer namuunaala namuunaalanu vislaeshimchaaru mariyu naalugu ververu encoding pathakaalanu kanugonnaru.
drushyamaanata.
oka paejeeni mudrinchadam ledhaa coppy cheyadam dwara mariyu taruvaata adhika-resolution scannertho oka chinna vibhaganni skaan cheyadam dwara yantra gurtimpu kodnu kanipinchela cheyavachu. mike yokka edainaa chukkalu spashtamgaa kanipinchela cheyadaaniki, pasupu rangu chaanelnu image prosessing prograamtho meruguparachavacchu. manchi kaanti paristhitulalo, namuunaanu chuudataaniki bhootaddam saripotundi. yuvi-light kinda pasupu chukkalu spashtamgaa gurtinchadaginavi.
eee steganographic prakriyanu upayoginchi, asalu (udhaa.zii. byaanku notu) nii neelam kaanti kinda gurtinchadaginadigaa cheyavachu. eee prakriyanu upayoginchi, mukkalu chesina mudranalanu kooda gurtinchavachhuh darpa praarambhinchina 2011 "mukkalu chese savaalu" nuu "mea mukkalu annee meeku chendinavi" anae brundam parishkarinchindi.ess."otavio good mariyu iddaru sahacharulu untaaru.
aacharanaatmaka anuvartanam.
vilekharulu mariyu bhadrata nipunulu iddaroo visilbloyer reality vijaeta dwara leaklanu "intercept" nirvahinchadam, indulo rahasya nsa patraalanu prachurinchadam mariyu printer tracking chukkalatho sahaa, vijaetanu leak ayina vyaktigaa gurtinchadaaniki upayoginchabadindani, idhi aamenu arrestu cheyadaaniki mariyu doshigaa nirdhaarinchadaaniki daariteesindani suuchimchaaru.
gopyata mariyu ullanghana yokka rakshana.
aarogya samrakshana samacharam, khaataa prakatanalu, pannu prakatana ledhaa balance sheetlu vanti rahasya vyaktigata samaachaaramtho kuudina patraala kaapeelu ledhaa print avutlanu printer yajamani vadda kanugonavacchu mariyu patraala prarambha teedeeni velladinchavacchu. eee namuunaalanu utpatti chese kodnu tayaareedaarulu pracharam cheyananduna, eee gurtinchadaginadi chaalaa mandhi viniyogadaarulaku teliyadu mariyu andubaatulo ledhu. anukokunda yea daetaanu coppy ledhaa printavutto pampinchavachho aspashtamgaa undhi. mukhyamgaa, chaalaa prabhaavitamaina printerla sahayaka saamagrilo eee saanketikata gurinchi prastaavinchaledu. 2005loe electronic frontier foundation (eff) decoding paddhatini korindi mariyu vislaeshanha kosam paithan lipini andubaatulo unchindi.
2018loe, thu dresden saastravettalu icchina rangu printer yokka steganographic sankethaalanu velikiteesi vislaeshimchadaaniki mariyu aaa taruvaata aaa printer nundi mudranalanu anaamakaparachadaaniki oka saadhananni abhivruddhi chesi prachurinchaaru. yantra gurtimpu code paina adanapu pasupu chukkalanu mudrinchadam dwara anaamakata panichestundi. firyaadulanu pracharam chese prayatnaalalo visilbloyerlaku maddatu ivvadaaniki saastravettalu softwarenu andubaatulo unchaaru.
polchadagina prakriyalu.
itara gurtimpu paddhatulu pasupu chukkala vale sulabhamgaa gurtinchabadavu. udaaharanaku, lazer teevrata yokka modulation mariyu grandhaalalo buudida rangu shades yokka vaividhyam ippatike saadhyame. tayaareedaarulu kooda eee paddhatulanu upayogistunnaro ledho teliyadu.