{"id":5632,"date":"2025-10-07T00:00:00","date_gmt":"2025-10-06T21:00:00","guid":{"rendered":"https:\/\/elmeistrai.lt\/?p=5632"},"modified":"2025-10-06T15:42:10","modified_gmt":"2025-10-06T12:42:10","slug":"bekontakciu-korteliu-technologija-mokejimas-per-atstuma","status":"publish","type":"post","link":"https:\/\/elmeistrai.lt\/fr\/bekontakciu-korteliu-technologija-mokejimas-per-atstuma\/","title":{"rendered":"Bekontak\u010di\u0173 korteli\u0173 technologija: mok\u0117jimas per atstum\u0105"},"content":{"rendered":"

Kaip viskas prasid\u0117jo ir kod\u0117l tai tapo populiaru<\/h2>\n\n\n\n

Prisimenu, kaip prie\u0161 kok\u012f de\u0161imtmet\u012f dar reik\u0117jo kiekvien\u0105 kart\u0105 ki\u0161ti kortel\u0119 \u012f terminal\u0105, laukti, kol ji bus nuskaityta, \u012fvesti PIN kod\u0105… Dabar tiesiog priglaud\u017eiu telefon\u0105 ar kortel\u0119 prie skaitytuvo \u2013 ir viskas. Bekontakt\u0117 technologija i\u0161 esm\u0117s pakeit\u0117 m\u016bs\u0173 kasdienyb\u0119, nors ne visi supranta, kaip tai i\u0161 tikr\u0173j\u0173 veikia.<\/p>\n\n\n\n

Viskas prasid\u0117jo nuo RFID (Radio Frequency Identification) technologijos, kuri buvo naudojama dar XX am\u017eiaus viduryje. I\u0161 prad\u017ei\u0173 tai buvo skirta visai kitiems tikslams \u2013 preki\u0173 sekimui, inventoriaus valdymui, net gyv\u016bn\u0173 \u017eym\u0117jimui. Bet ka\u017ekas sugalvojo: o kod\u0117l gi nepanaudoti \u0161ios technologijos mok\u0117jimams? Ir \u0161tai 2003-aisiais pasirod\u0117 pirmosios bekontakt\u0117s mok\u0117jimo kortel\u0117s. Tiesa, jos nebuvo itin populiarios \u2013 \u017emon\u0117s nepasitik\u0117jo, atrod\u0117 keista, kad galima sumok\u0117ti tiesiog priglaudus kortel\u0119.<\/p>\n\n\n\n

L\u016b\u017eis \u012fvyko ma\u017edaug prie\u0161 10-15 met\u0173, kai did\u017eiosios mok\u0117jimo sistemos \u2013 Visa, Mastercard, American Express \u2013 prad\u0117jo aktyviai diegti NFC (Near Field Communication) technologij\u0105. Tai buvo RFID evoliucija, pritaikyta b\u016btent mok\u0117jimams, su geresniais saugumo mechanizmais ir standartu, kur\u012f gal\u0117jo naudoti visi.<\/p>\n\n\n\n

Kas vyksta po kortel\u0117s pavir\u0161iumi<\/h2>\n\n\n\n

Bekontakt\u0117 kortel\u0117 i\u0161 i\u0161or\u0117s atrodo kaip \u012fprasta plastikin\u0117 kortel\u0117, bet viduje slypi tikra technologin\u0117 stebukl\u0173 \u0161alis. Pati svarbiausia dalis \u2013 tai ma\u017eyt\u0117 anten\u0117l\u0117, kuri da\u017eniausiai yra \u012fmontuota kortel\u0117s pakra\u0161tyje. Jei pa\u017ei\u016br\u0117site \u012f \u0161vies\u0105, kartais net galima j\u0105 \u012f\u017ei\u016br\u0117ti kaip plonyt\u0119 linij\u0105.<\/p>\n\n\n\n

\u0160alia antenos yra mikroschema \u2013 ma\u017eytis kompiuteris, kuris saugo j\u016bs\u0173 mok\u0117jimo duomenis. Bet ne visus \u2013 ir \u010dia yra esm\u0117. Kortel\u0117je n\u0117ra j\u016bs\u0173 tikrojo kortel\u0117s numerio, galiojimo datos ar CVV kodo tokia forma, kokia jie i\u0161spausdinti ant plastikin\u0117s kortel\u0117s. Vietoj to naudojami vadinamieji tokenai \u2013 unikal\u016bs, vienkartiniai kodai, kurie generuojami kiekvienam mok\u0117jimui.<\/p>\n\n\n\n

Kai priglaud\u017eiate kortel\u0119 prie terminalo, vyksta ma\u017edaug \u0161tai kas:<\/p>\n\n\n\n

1. Terminalas i\u0161spinduliuoja elektromagnetin\u012f lauk\u0105 (da\u017enis \u2013 13.56 MHz)
2. \u0160is laukas „pa\u017eadina” kortel\u0117s anten\u0105 ir mikroschemos energij\u0105 \u2013 taip, kortelei nereikia baterijos!
3. Kortel\u0117 ir terminalas pradeda „kalb\u0117tis” \u2013 kei\u010diasi duomenimis per radiobang\u0173 signalus
4. Kortel\u0117 sugeneruoja unikal\u0173 mok\u0117jimo token\u0105 ir persiun\u010dia j\u012f terminalui
5. Terminalas \u0161\u012f token\u0105 persiun\u010dia \u012f mok\u0117jimo sistem\u0105, kuri patikrina ir patvirtina mok\u0117jim\u0105<\/p>\n\n\n\n

Visas \u0161is procesas u\u017etrunka ma\u017eiau nei sekund\u0119. Kai kurie \u017emon\u0117s net nesp\u0117ja suprasti, kad mok\u0117jimas jau \u012fvyko.<\/p>\n\n\n\n

Kod\u0117l reikia laikyti taip arti<\/h2>\n\n\n\n

Vienas da\u017eniausi\u0173 klausim\u0173 \u2013 kod\u0117l reikia priglausti kortel\u0119 beveik prie pat terminalo? Kod\u0117l neveikia i\u0161 didesnio atstumo? Atsakymas gl\u016bdi fizikoje ir saugume.<\/p>\n\n\n\n

NFC technologija dirba labai trumpu atstumu \u2013 paprastai iki 4 centimetr\u0173, maksimaliai iki 10 centimetr\u0173. Tai n\u0117ra technologijos tr\u016bkumas, o s\u0105moningas pasirinkimas. Trumpas veikimo atstumas u\u017etikrina, kad:<\/p>\n\n\n\n

– Negal\u0117tum\u0117te nety\u010dia sumok\u0117ti, tiesiog praeidami pro \u0161al\u012f terminalo
– Suk\u010diams b\u016bt\u0173 daug sunkiau nuskaityti j\u016bs\u0173 kortel\u0117s duomenis i\u0161 tolo
– Terminalas „matyt\u0173” tik vien\u0105 kortel\u0119, o ne visas, kurios yra j\u016bs\u0173 pinigin\u0117je ar ki\u0161en\u0117je<\/p>\n\n\n\n

Elektromagnetinis laukas, kur\u012f generuoja terminalas, labai greitai silpn\u0117ja did\u0117jant atstumui. Tai vadinama atvirk\u0161\u010diai proporcinga kubine priklausomybe \u2013 kitaip tariant, padidin\u0119 atstum\u0105 du kartus, signalo stiprum\u0105 suma\u017einate a\u0161tuonis kartus. Tod\u0117l prakti\u0161kai ne\u012fmanoma, kad kortel\u0117 veikt\u0173 i\u0161 ki\u0161en\u0117s, jei terminalas yra ant prekystal\u0117s.<\/p>\n\n\n\n

Saugumas: ar tikrai negalima pavogti pinig\u0173<\/h2>\n\n\n\n

\u010cia prasideda \u012fdomiausia dalis, nes apie bekontak\u010di\u0173 korteli\u0173 saugum\u0105 sklando daugyb\u0117 mit\u0173. Pasakysiu i\u0161 karto \u2013 sistema yra gana saugi, bet ne tobula. Pa\u017ei\u016br\u0117kime, kokie apsaugos mechanizmai veikia:<\/p>\n\n\n\n

**Tokenizacija** \u2013 kaip jau min\u0117jau, kortel\u0117 neperduoda tikr\u0173j\u0173 duomen\u0173. Kiekvienas mok\u0117jimas naudoja unikal\u0173 token\u0105, kuris yra bevertis po to, kai mok\u0117jimas \u012fvyksta. Net jei kas nors perims \u0161\u012f token\u0105, jis negal\u0117s jo panaudoti dar kart\u0105.<\/p>\n\n\n\n

**Mok\u0117jimo limitai** \u2013 daugumoje \u0161ali\u0173 bekontaktis mok\u0117jimas be PIN kodo galimas tik iki tam tikros sumos (Lietuvoje \u2013 50 eur\u0173). Vir\u0161ijus \u0161i\u0105 sum\u0105, reik\u0117s \u012fvesti PIN kod\u0105. Be to, po keli\u0173 bekontak\u010di\u0173 mok\u0117jim\u0173 i\u0161 eil\u0117s sistema automati\u0161kai pareikalaus \u012fvesti PIN \u2013 tai apsaugo nuo situacijos, kai kas nors pavog\u0117 j\u016bs\u0173 kortel\u0119 ir daro daug ma\u017e\u0173 pirkim\u0173.<\/p>\n\n\n\n

**Kriptografija** \u2013 visi duomenys tarp kortel\u0117s ir terminalo yra \u0161ifruojami. Naudojami asimetriniai \u0161ifravimo algoritmai, pana\u0161\u016bs \u012f tuos, kurie saugo internetinius banko prisijungimus.<\/p>\n\n\n\n

Ta\u010diau yra ir silpn\u0173 viet\u0173. Teori\u0161kai galima sukurti ne\u0161iojam\u0105 terminal\u0105 ir bandyti nuskaityti \u017emoni\u0173 korteles vie\u0161ose vietose. Prakti\u0161kai tai labai sud\u0117tinga \u2013 reikia b\u016bti labai arti (keli\u0173 centimetr\u0173 atstumu), o net ir pavykus, galima tik inicijuoti mok\u0117jim\u0105, kuris bus u\u017efiksuotas sistemoje su laiku, vieta ir kitais duomenimis. Suk\u010dius greitai b\u016bt\u0173 susektas.<\/p>\n\n\n\n

Didesnis pavojus \u2013 tai kortel\u0117s fizinis praradimas. Jei kas nors randa ar pavogi\u0105 j\u016bs\u0173 kortel\u0119, jis gali atlikti kelis bekontak\u010dius mok\u0117jimus, kol j\u016bs u\u017eblokuosite kortel\u0119. Tod\u0117l labai svarbu kuo grei\u010diau prane\u0161ti bankui apie prarast\u0105 kortel\u0119.<\/p>\n\n\n\n

Telefonai ir i\u0161manieji laikrod\u017eiai: ta pati technologija, tik geriau<\/h2>\n\n\n\n

Dabar vis daugiau \u017emoni\u0173 moka ne kortel\u0117mis, o telefonais ar i\u0161maniaisiais laikrod\u017eiais. Tai naudoja t\u0105 pa\u010di\u0105 NFC technologij\u0105, bet su papildomais saugumo sluoksniais.<\/p>\n\n\n\n

Kai pridedame kortel\u0119 \u012f Apple Pay, Google Pay ar Samsung Pay, tikrasis kortel\u0117s numeris niekada nesaugomas telefone. Vietoj to bankas sugeneruoja virtual\u0173 kortel\u0117s numer\u012f (Device Account Number), kuris saugomas specialiame saugos \u010dipe telefone. \u0160is \u010dipas vadinamas Secure Element arba Trusted Execution Environment \u2013 tai izoliuota aplinka, kuri\u0105 net pats telefonas negali pasiekti.<\/p>\n\n\n\n

Kai mokate telefonu, vyksta papildomi patikrinimo \u017eingsniai:<\/p>\n\n\n\n

– Reikia atrakinti telefon\u0105 (veido atpa\u017einimu, pir\u0161to atspaudu ar kodu)
– Telefonas patikrina, ar tai tikrai j\u016bs (biometrija)
– Tik tada generuojamas mok\u0117jimo tokenas<\/p>\n\n\n\n

D\u0117l \u0161i\u0173 papildom\u0173 apsaug\u0173 telefonas yra saugesnis nei fizin\u0117 kortel\u0117. Jei kas nors pavogi\u0105 j\u016bs\u0173 telefon\u0105, jis negal\u0117s sumok\u0117ti be j\u016bs\u0173 biometrijos ar kodo. O jei pavogi\u0105 kortel\u0119 \u2013 gali i\u0161 karto prad\u0117ti mok\u0117ti.<\/p>\n\n\n\n

Dar vienas privalumas \u2013 telefone galite tur\u0117ti kelias korteles ir pasirinkti, kuria mok\u0117ti. Kai kurie telefonai net leid\u017eia mok\u0117ti, kai baterija i\u0161sekusi \u2013 tam naudojama specialiai rezervuota energija NFC \u010dipe.<\/p>\n\n\n\n

Kur dar naudojama \u0161i technologija<\/h2>\n\n\n\n

Bekontakt\u0117 technologija seniai i\u0161\u0117jo u\u017e mok\u0117jim\u0173 rib\u0173. Tikriausiai kasdien naudojate j\u0105 net ne\u012fsis\u0105monindami:<\/p>\n\n\n\n

**Vie\u0161asis transportas** \u2013 daugelyje miest\u0173 galima prisiliesti kortele ar telefonu prie skaitytuvo \u012flipant \u012f autobus\u0105 ar metro. Tai ta pati NFC technologija, tik pritaikyta biliet\u0173 sistemai.<\/p>\n\n\n\n

**Prieigos kortel\u0117s** \u2013 daugelyje biur\u0173, vie\u0161bu\u010di\u0173, sporto klub\u0173 naudojamos bekontakt\u0117s kortel\u0117s durims atrakinti. \u010cia da\u017eniau naudojama RFID technologija, kuri veikia \u0161iek tiek kitokiu da\u017eniu, bet principas tas pats.<\/p>\n\n\n\n

**Preki\u0173 apsauga** \u2013 tie ma\u017ei lipdukai ant preki\u0173 parduotuv\u0117se, kurie pypia, jei bandai i\u0161eiti neapsimok\u0117j\u0119s \u2013 tai irgi RFID \u017eym\u0117s.<\/p>\n\n\n\n

**Gyv\u016bn\u0173 \u010dipavimas** \u2013 veterinarai \u012fdeda gyv\u016bnams po oda ma\u017eyt\u012f RFID \u010dip\u0105, kuriame saugoma informacija apie gyv\u016bn\u0105 ir jo \u0161eiminink\u0105.<\/p>\n\n\n\n

**Bibliotekos** \u2013 knyg\u0173 skolinimasis ir gr\u0105\u017einimas da\u017enai vyksta naudojant RFID \u017eymes, \u012fklijuotas \u012f knygas.<\/p>\n\n\n\n

\u012edomu tai, kad visose \u0161iose srityse naudojama pana\u0161i technologija, tik pritaikyta konkretiems poreikiams. Mok\u0117jimo kortel\u0117ms reikia auk\u0161\u010diausio saugumo lygio, o preki\u0173 \u017eym\u0117ms \u2013 pigiausios gamybos kainos.<\/p>\n\n\n\n

Ateities perspektyvos ir kas laukia toliau<\/h2>\n\n\n\n

Bekontakt\u0117 technologija nuolat tobul\u0117ja. Jau dabar matome kelet\u0105 \u012fdomi\u0173 kryp\u010di\u0173:<\/p>\n\n\n\n

**Biometrija kortel\u0117se** \u2013 kai kurie bankai jau i\u0161leid\u017eia korteles su integruotu pir\u0161to atspaud\u0173 skaitytuvu. Tai leid\u017eia mok\u0117ti didesnes sumas be PIN kodo \u2013 tiesiog priglaud\u017eiate pir\u0161t\u0105 prie kortel\u0117s ir ji patvirtina, kad tai tikrai j\u016bs.<\/p>\n\n\n\n

**Didesni limitai** \u2013 kai sistema tampa saugesn\u0117, limitai be PIN kodo did\u0117ja. Kai kur jau galima mok\u0117ti iki 100 eur\u0173 be papildomo patvirtinimo.<\/p>\n\n\n\n

**K\u016bno implantai** \u2013 nors skamba kaip mokslin\u0117 fantastika, kai kurie entuziastai jau \u012fsidieg\u0117 NFC \u010dipus po oda. Tai leid\u017eia mok\u0117ti, atrakinti duris ar net dalintis kontaktais tiesiog priglaudus rank\u0105. Kol kas tai labiau hobis nei masinis rei\u0161kinys, bet kas \u017eino, kas bus po 20 met\u0173.<\/p>\n\n\n\n

**I\u0161pl\u0117stin\u0117 realyb\u0117** \u2013 ateityje galb\u016bt gal\u0117sime matyti per i\u0161maniuosius akinius, kiek kainuoja prek\u0117, ir sumok\u0117ti tiesiog pa\u017evelg\u0119 \u012f j\u0105. NFC technologija \u010dia gal\u0117t\u0173 atlikti svarb\u0173 vaidmen\u012f.<\/p>\n\n\n\n

\u012edomu tai, kad technologija juda dviem kryptimis vienu metu \u2013 tampa ir patogesn\u0117, ir saugesn\u0117. Tai retas atvejis, kai patogumo didinimas neatne\u0161a saugumo kompromis\u0173.<\/p>\n\n\n\n

Praktiniai patarimai kasdieniam naudojimui<\/h2>\n\n\n\n

Baigdamas noriu pasidalinti keliais patarimais, kaip saugiai ir efektyviai naudoti bekontakt\u0119 technologij\u0105:<\/p>\n\n\n\n

**Neskub\u0117kite atitraukti kortel\u0117s** \u2013 kai kurie \u017emon\u0117s priglaud\u017eia kortel\u0119 ir i\u0161 karto j\u0105 atitraukia. Geriau palaikyti sekund\u0119 ar dvi, kol terminalas patvirtins mok\u0117jim\u0105. Taip i\u0161vengsite situacijos, kai reikia kartoti proced\u016br\u0105.<\/p>\n\n\n\n

**Jei pinigin\u0117je kelios kortel\u0117s** \u2013 i\u0161imkite t\u0105, kuria norite mok\u0117ti. Kai visos kortel\u0117s kr\u016bvoje, terminalas gali „pamatyti” kelias i\u0161 karto ir atsisakyti apdoroti mok\u0117jim\u0105. Arba, dar blogiau, gali nuskaityti ne t\u0105 kortel\u0119.<\/p>\n\n\n\n

**Steb\u0117kite savo s\u0105skaitos i\u0161ra\u0161us** \u2013 nors bekontakt\u0117s kortel\u0117s yra saugios, visada verta reguliariai tikrinti savo banko s\u0105skait\u0105. Jei pasteb\u0117site \u012ftartin\u0173 operacij\u0173, i\u0161 karto susisiekite su banku.<\/p>\n\n\n\n

**Naudokite telefono mok\u0117jimus, kai \u012fmanoma** \u2013 kaip min\u0117jau, telefonas yra saugesnis nei fizin\u0117 kortel\u0117 d\u0117l papildom\u0173 biometrini\u0173 apsaug\u0173.<\/p>\n\n\n\n

**Ne\u012fsigykite „RFID apsaugini\u0173 pinigini\u0173”** \u2013 internete parduodama daug pinigini\u0173, kurios tariamai apsaugo nuo bekontak\u010dio korteli\u0173 nuskaitymo. Dauguma j\u0173 yra tik marketingo triukas. Reali gr\u0117sm\u0117 yra tokia ma\u017ea, kad n\u0117ra prasm\u0117s u\u017e tai mok\u0117ti papildomai.<\/p>\n\n\n\n

**\u017dinokite, kaip greitai u\u017eblokuoti kortel\u0119** \u2013 \u012fsira\u0161ykite \u012f telefon\u0105 banko numer\u012f, kuriuo galite u\u017eblokuoti kortel\u0119. Arba dar geriau \u2013 daugelis bank\u0173 turi mobili\u0105sias aplikacijas, kuriose galite laikinai „u\u017e\u0161aldyti” kortel\u0119 vienu mygtuko paspaudimu.<\/p>\n\n\n\n

Bekontakt\u0117 technologija tikrai pakeit\u0117 m\u016bs\u0173 gyvenim\u0105 \u2013 padar\u0117 j\u012f greitesn\u012f, patogesn\u012f ir, paradoksalu, saugesn\u012f nei buvo su senomis magnetin\u0117s juostos kortel\u0117mis. Nors prad\u017eioje daugelis \u017emoni\u0173 bijojo \u0161ios naujov\u0117s, dabar sunku \u012fsivaizduoti gyvenim\u0105 be jos. Ir tai tik prad\u017eia \u2013 ateityje \u0161i technologija taps dar labiau integruota \u012f m\u016bs\u0173 kasdienyb\u0119, galb\u016bt net taip, kad nebebus reikia joki\u0173 korteli\u0173 ar telefon\u0173. Bet tai jau kita istorija.<\/p>","protected":false},"excerpt":{"rendered":"

Kaip viskas prasid\u0117jo ir kod\u0117l tai tapo populiaru Prisimenu, kaip prie\u0161 kok\u012f de\u0161imtmet\u012f dar reik\u0117jo kiekvien\u0105 kart\u0105 ki\u0161ti kortel\u0119 \u012f…<\/p>","protected":false},"author":1,"featured_media":5630,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[7],"tags":[],"class_list":["post-5632","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kompiuteriu-remontas-kompiuteriai-naujienos-patarimai","wpcat-7-id"],"yoast_head":"\nBekontak\u010di\u0173 korteli\u0173 technologija: mok\u0117jimas per atstum\u0105<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/elmeistrai.lt\/fr\/bekontakciu-korteliu-technologija-mokejimas-per-atstuma\/\" \/>\n<meta property=\"og:locale\" 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