{"id":53924,"date":"2019-12-13T00:00:00","date_gmt":"2019-12-12T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/chto-takoe-nfc-i-kak-on-rabotaet-osvezhim-osnovy"},"modified":"2020-02-18T14:01:52","modified_gmt":"2020-02-18T11:01:52","slug":"chto-takoe-nfc-i-kak-on-rabotaet-osvezhim-osnovy","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/chto-takoe-nfc-i-kak-on-rabotaet-osvezhim-osnovy","title":{"rendered":"Mi az NFC \u00e9s hogyan m\u0171k\u00f6dik. Friss\u00edts\u00fck az alapokat?","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>\u00dcdv\u00f6z\u00f6lj\u00fck a Habr felhaszn\u00e1l\u00f3it! Bemutatok egy cikk ford\u00edt\u00e1s\u00e1t \u201e<noindex><a rel=\"nofollow\" href=\"https:\/\/www.androidauthority.com\/what-is-nfc-270730\/\">Mi az NFC \u00e9s hogyan m\u0171k\u00f6dik<\/a><\/noindex>\u201d Robert Triggs toll\u00e1b\u00f3l. \u00dagy t\u0171nik, minek \u00edrni err\u0151l az eredeti szerz\u0151nek 2019-ben, \u00e9s nekem ford\u00edtani 2020 k\u00fcsz\u00f6b\u00e9n? Ma az NFC elnyerte val\u00f3di l\u00e9tjogosults\u00e1g\u00e1t, \u00e9s m\u00e1r nem csak geekek sz\u00e1m\u00e1ra k\u00e9sz\u00fclt kulcstart\u00f3-tokenek technol\u00f3gi\u00e1ja. Most m\u00e1r a fizet\u00e9sekhez, valamint r\u00e9szben az okosotthonokhoz \u00e9s okosgy\u00e1rt\u00e1shoz is kapcsol\u00f3dik. Mi\u00e9rt ne ism\u00e9teln\u00e9nk meg a m\u00e1r megtett utat, vagy n\u00e9h\u00e1nyak sz\u00e1m\u00e1ra \u00faj ismereteket ny\u00fajtsunk?<\/p>\n<p><img decoding=\"async\" alt=\"Mi az NFC \u00e9s hogyan m\u0171k\u00f6dik. Friss\u00edts\u00fck az alapokat?\" src=\"\/wp-content\/uploads\/2019\/12\/080c9f6ca15ee0d1a9c1d88a88dc1c2e.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nAz NFC egy priorit\u00e1sk\u00e9nt fejl\u0151d\u0151 vezet\u00e9k n\u00e9lk\u00fcli technol\u00f3gia, amely az online fizet\u00e9si rendszerek, p\u00e9ld\u00e1ul a Samsung Pay \u00e9s a Google Pay fejl\u0151d\u00e9s\u00e9nek k\u00f6sz\u00f6nhet\u0151. K\u00fcl\u00f6n\u00f6sen, ha z\u00e1szl\u00f3shaj\u00f3 eszk\u00f6z\u00f6kr\u0151l \u00e9s ak\u00e1r k\u00f6z\u00e9pkateg\u00f3ri\u00e1s okostelefonokr\u00f3l van sz\u00f3. Tal\u00e1n kor\u00e1bban hallott m\u00e1r err\u0151l a kifejez\u00e9sr\u0151l, de pontosan mit jelent az NFC? Ebben a r\u00e9szben r\u00e9szletesen megvizsg\u00e1ljuk, mi ez, hogyan m\u0171k\u00f6dik \u00e9s mire haszn\u00e1lj\u00e1k.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nAz NFC kifejt\u00e9se \"Near Field Communication\" (\"Kis hat\u00f3t\u00e1vols\u00e1g\u00fa kommunik\u00e1ci\u00f3\") \u00e9s, ahogy a neve is sugallja, r\u00f6vid t\u00e1vols\u00e1g\u00fa kapcsolatot biztos\u00edt a kompatibilis eszk\u00f6z\u00f6k k\u00f6z\u00f6tt. Ehhez legal\u00e1bb egy k\u00f6zvet\u00edt\u0151 \u00e9s egy jelvev\u0151 eszk\u00f6z sz\u00fcks\u00e9ges. Sz\u00e1mos eszk\u00f6z haszn\u00e1lja az NFC szabv\u00e1nyt, \u00e9s ezek passz\u00edv vagy akt\u00edv eszk\u00f6z\u00f6knek min\u0151s\u00fclnek.<\/p>\n<p>A passz\u00edv NFC eszk\u00f6z\u00f6k k\u00f6z\u00e9 tartoznak a c\u00edmk\u00e9k \u00e9s m\u00e1s apr\u00f3 ad\u00f3egys\u00e9gek, amelyek an\u00e9lk\u00fcl k\u00fcldenek inform\u00e1ci\u00f3t m\u00e1s NFC eszk\u00f6z\u00f6knek, hogy saj\u00e1t energiaforr\u00e1ssal rendelkezn\u00e9nek. Azonban nem dolgozz\u00e1k fel a m\u00e1s forr\u00e1sokb\u00f3l \u00e9rkez\u0151 inform\u00e1ci\u00f3t, \u00e9s nem csatlakoznak m\u00e1s passz\u00edv eszk\u00f6z\u00f6kh\u00f6z. Ezeket gyakran haszn\u00e1lj\u00e1k interakt\u00edv t\u00e1bl\u00e1kon vagy p\u00e9ld\u00e1ul rekl\u00e1mokn\u00e1l.<\/p>\n<p>Az akt\u00edv eszk\u00f6z\u00f6k k\u00e9pesek adatokat k\u00fcldeni vagy fogadni, \u00e9s adatokat cser\u00e9lni egym\u00e1ssal, valamint passz\u00edv eszk\u00f6z\u00f6kkel. Jelenleg az okostelefonok a legelterjedtebb akt\u00edv NFC eszk\u00f6z\u00f6k. A t\u00f6megk\u00f6zleked\u00e9si k\u00e1rtyaolvas\u00f3k \u00e9s a kontaktus n\u00e9lk\u00fcli fizet\u00e9si termin\u00e1lok is j\u00f3 p\u00e9ld\u00e1k erre a technol\u00f3gi\u00e1ra. <\/p>\n<h2>Hogyan m\u0171k\u00f6dik az NFC?<\/h2>\n<p>\nMost m\u00e1r tudjuk, mi az NFC, de hogyan m\u0171k\u00f6dik? Hasonl\u00f3an a Bluetoothhoz, Wi-Fihoz \u00e9s m\u00e1s vezet\u00e9k n\u00e9lk\u00fcli jelekhez, az NFC is r\u00e1di\u00f3hull\u00e1mok seg\u00edts\u00e9g\u00e9vel tov\u00e1bb\u00edtja az inform\u00e1ci\u00f3t. A k\u00f6zeli kommunik\u00e1ci\u00f3 az egyik szabv\u00e1ny a vezet\u00e9k n\u00e9lk\u00fcli adatok tov\u00e1bb\u00edt\u00e1s\u00e1ra. Ez azt jelenti, hogy a k\u00e9sz\u00fcl\u00e9keknek meg kell felelni\u00fck bizonyos specifik\u00e1ci\u00f3knak ahhoz, hogy helyesen tudjanak kommunik\u00e1lni egym\u00e1ssal. Az NFC technol\u00f3gi\u00e1ja a r\u00e9gi RFID (r\u00e1di\u00f3frekvenci\u00e1s azonos\u00edt\u00e1s) \u00f6tletein alapul, ahol az inform\u00e1ci\u00f3k tov\u00e1bb\u00edt\u00e1s\u00e1hoz elektrom\u00e1gneses indukci\u00f3t haszn\u00e1lnak.<\/p>\n<p>Ez egy jelent\u0151s k\u00fcl\u00f6nbs\u00e9get jelent az NFC \u00e9s a Bluetooth\/WiFi k\u00f6z\u00f6tt. Az el\u0151bbit lehet haszn\u00e1lni elektromoss\u00e1g induk\u00e1l\u00e1s\u00e1ra passz\u00edv komponensekbe (passz\u00edv NFC) \u00e9s adatok egyszer\u0171 \u00e1tk\u00fcld\u00e9s\u00e9re is. Ez azt jelenti, hogy a passz\u00edv eszk\u00f6z\u00f6k nem ig\u00e9nyelnek saj\u00e1t \u00e1ramforr\u00e1st. Ehelyett az akt\u00edv NFC \u00e1ltal l\u00e9trehozott elektrom\u00e1gneses mez\u0151b\u0151l nyernek energi\u00e1t, amikor bel\u00e9pnek a hat\u00f3sugar\u00e1ba. Sajnos az NFC technol\u00f3gia nem biztos\u00edt elegend\u0151 induktivit\u00e1st a telefonjaink t\u00f6lt\u00e9s\u00e9re, de a QI vezet\u00e9k n\u00e9lk\u00fcli t\u00f6lt\u00e9s k\u00f6r\u00fclbel\u00fcl ugyanazon az elven alapul.<\/p>\n<p><img decoding=\"async\" alt=\"Mi az NFC \u00e9s hogyan m\u0171k\u00f6dik. Friss\u00edts\u00fck az alapokat?\" src=\"\/wp-content\/uploads\/2019\/12\/355ce8afa3ebf8ffd24eaba83b6bc30c.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nAz NFC adat\u00e1tviteli frekvenci\u00e1ja 13,56 megahertz. Az adatokat 106, 212 vagy 424 kbit\/s sebess\u00e9ggel lehet k\u00fcldeni. Ez el\u00e9g gyors az adat\u00e1tviteli tartom\u00e1nyhoz \u2014 a n\u00e9vjegyadatokt\u00f3l kezdve a k\u00e9pek \u00e9s zen\u00e9k cser\u00e9j\u00e9ig.<\/p>\n<p>Azt, hogy milyen t\u00edpus\u00fa inform\u00e1ci\u00f3k lesznek el\u00e9rhet\u0151k az eszk\u00f6z\u00f6k k\u00f6z\u00f6tti cser\u00e9re, az NFC szabv\u00e1ny jelenleg h\u00e1rom k\u00fcl\u00f6nb\u00f6z\u0151 m\u0171k\u00f6d\u00e9si m\u00f3dot defini\u00e1l. Val\u00f3sz\u00edn\u0171leg a leggyakoribb felhaszn\u00e1l\u00e1s (NFC) az okostelefonokban a peer-to-peer kapcsolat m\u00f3dja. Ez lehet\u0151v\u00e9 teszi, hogy k\u00e9t NFC-vel rendelkez\u0151 k\u00e9sz\u00fcl\u00e9k k\u00fcl\u00f6nf\u00e9le inform\u00e1ci\u00f3kat cser\u00e9ljen egym\u00e1ssal. Ebben a m\u00f3dban mindk\u00e9t eszk\u00f6z v\u00e1lthat az akt\u00edv (adatok \u00e1tk\u00fcld\u00e9sekor) \u00e9s a passz\u00edv (adatok fogad\u00e1sakor) k\u00f6z\u00f6tt.<\/p>\n<p>A read\/write m\u00f3d egyir\u00e1ny\u00fa adat\u00e1tvitelt jelent. Az akt\u00edv eszk\u00f6z, tal\u00e1n az okostelefonod, egy m\u00e1sik eszk\u00f6zzel l\u00e9p kapcsolatba, hogy adatokat olvasson le r\u00f3la. Az NFC rekl\u00e1mc\u00edmk\u00e9k is ezt a m\u00f3dot haszn\u00e1lj\u00e1k.<\/p>\n<p>Az utols\u00f3 m\u0171k\u00f6d\u00e9si m\u00f3d a k\u00e1rtya emul\u00e1ci\u00f3ja. A NFC eszk\u00f6z \u00fagy m\u0171k\u00f6dik, mint egy intelligens vagy \u00e9rint\u00e9smentes hitelk\u00e1rtya, hogy fizet\u00e9seket v\u00e9gezzen vagy csatlakozzon a k\u00f6zleked\u00e9si rendszerekhez.<\/p>\n<h2>\u00d6sszehasonl\u00edt\u00e1s a Bluetooth-tal<\/h2>\n<p>\nTeh\u00e1t miben k\u00fcl\u00f6nb\u00f6zik a NFC m\u00e1s vezet\u00e9k n\u00e9lk\u00fcli technol\u00f3gi\u00e1kt\u00f3l? Gondolhatn\u00e1d, hogy a NFC nem olyan l\u00e9nyeges, figyelembe v\u00e9ve, hogy a Bluetooth sz\u00e9lesebb k\u00f6rben elterjedt \u00e9s \u00e9vek \u00f3ta vezet\u0151 szerepet t\u00f6lt be (am\u00fagy a fent eml\u00edtett intelligens otthon \u00e9s intelligens gy\u00e1rt\u00e1s rendszereiben is domin\u00e1l). Ennek ellen\u00e9re n\u00e9h\u00e1ny fontos technikai k\u00fcl\u00f6nbs\u00e9g van k\u00f6z\u00f6tt\u00fck, amelyek a NFC-nak jelent\u0151s el\u0151ny\u00f6ket adnak bizonyos k\u00f6r\u00fclm\u00e9nyek k\u00f6z\u00f6tt. A NFC mellett sz\u00f3l\u00f3 f\u0151 \u00e9rv az, hogy sokkal kevesebb energi\u00e1t fogyaszt, mint a Bluetooth. Ez ide\u00e1liss\u00e1 teszi a NFC-t passz\u00edv eszk\u00f6z\u00f6kh\u00f6z, mint p\u00e9ld\u00e1ul a fent eml\u00edtett interakt\u00edv c\u00edmk\u00e9k, mivel ezek f\u0151 \u00e1ramforr\u00e1s n\u00e9lk\u00fcl m\u0171k\u00f6dnek.<\/p>\n<p>Ez az energiatakar\u00e9koss\u00e1g azonban sz\u00e1mos jelent\u0151s h\u00e1tr\u00e1nnyal j\u00e1r. K\u00fcl\u00f6n\u00f6sen a hat\u00f3t\u00e1vols\u00e1g jelent\u0151sen kisebb, mint a Bluetooth eset\u00e9ben. M\u00edg a NFC m\u0171k\u00f6d\u00e9si tartom\u00e1nya 10 cm, mind\u00f6ssze n\u00e9h\u00e1ny h\u00fcvelyk, a Bluetooth adatokat kiss\u00e9 t\u00f6bb mint 10 m\u00e9teres t\u00e1vols\u00e1gb\u00f3l tov\u00e1bb\u00edt. Egy m\u00e1sik h\u00e1tr\u00e1ny, hogy a NFC kicsit lassabb, mint a Bluetooth. Az adatok maxim\u00e1lis sebess\u00e9ggel mind\u00f6ssze 424 kbit\/s sebess\u00e9ggel ker\u00fclnek tov\u00e1bb\u00edt\u00e1sra, szemben a Bluetooth 2.1 k\u00f6r\u00fcli 2,1 Mbit\/s sebess\u00e9ggel vagy a Bluetooth Alacsony Energia k\u00f6r\u00fcli 1 Mbit\/s sebess\u00e9ggel.<\/p>\n<p>De a NFC-nek van egy f\u0151 el\u0151nye: a gyorsabb csatlakoz\u00e1s. Az indukt\u00edv kapcsolat haszn\u00e1lat\u00e1nak \u00e9s a manu\u00e1lis p\u00e1ros\u00edt\u00e1s hi\u00e1ny\u00e1nak k\u00f6sz\u00f6nhet\u0151en a k\u00e9t eszk\u00f6z k\u00f6z\u00f6tti kapcsolat kevesebb mint egy tizedm\u00e1sodpercet vesz ig\u00e9nybe. M\u00edg a modern Bluetooth meglehet\u0151sen gyorsan csatlakozik, a NFC m\u00e9g mindig nagyon k\u00e9nyelmes bizonyos szcen\u00e1ri\u00f3kban. \u00c9s am\u00edg a mobilfizet\u00e9sek \u2014 ez az \u0151 megk\u00e9rd\u0151jelezhetetlen alkalmaz\u00e1si ter\u00fclete.<\/p>\n<p>A Samsung Pay, az Android Pay \u00e9s az Apple Pay NFC technol\u00f3gi\u00e1t haszn\u00e1lnak \u2014 b\u00e1r a Samsung Pay m\u00e1s elven m\u0171k\u00f6dik, mint a t\u00f6bbiek. M\u00edg a Bluetooth jobban m\u0171k\u00f6dik az eszk\u00f6z\u00f6k kapcsolat\u00e1n\u00e1l, f\u00e1jlok \u00e1tvitele\/meg\u00e9rt\u00e9se, hangsz\u00f3r\u00f3khoz val\u00f3 csatlakoz\u00e1s stb., rem\u00e9lj\u00fck, hogy a NFC mindig helyet fog kapni a mobilfizet\u00e9si technol\u00f3gi\u00e1k gyorsan fejl\u0151d\u0151 vil\u00e1g\u00e1ban.<\/p>\n<p>Egy\u00e9bk\u00e9nt, k\u00e9rd\u00e9s a Habr-nak \u2014 haszn\u00e1lj\u00e1tok az NFC-tokeneket a projektjeitekben? Hogyan?<br \/>\n<br \/>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/479904\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0417\u0434\u0440\u0430\u0432\u0441\u0442\u0432\u0443\u0439\u0442\u0435, \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0425\u0430\u0431\u0440\u0430! \u042f \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u044e \u0432\u0430\u0448\u0435\u043c\u0443 \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u044e \u043f\u0435\u0440\u0435\u0432\u043e\u0434 \u0441\u0442\u0430\u0442\u044c\u0438 \u00abWhat is NFC and how does it work\u00bb \u043f\u043e\u0434 \u0430\u0432\u0442\u043e\u0440\u0441\u0442\u0432\u043e\u043c Robert Triggs. \u0412\u0440\u043e\u0434\u0435, \u043a\u0430\u0437\u0430\u043b\u043e\u0441\u044c \u0431\u044b, \u0437\u0430\u0447\u0435\u043c \u0430\u0432\u0442\u043e\u0440\u0443 \u043e\u0440\u0438\u0433\u0438\u043d\u0430\u043b\u0430 \u043f\u0438\u0441\u0430\u0442\u044c \u043d\u0430 \u044d\u0442\u0443 \u0442\u0435\u043c\u0443 \u0432 2019-\u043c, \u0430 \u043c\u043d\u0435 \u043f\u0435\u0440\u0435\u0432\u043e\u0434\u0438\u0442\u044c \u043d\u0430 \u043f\u043e\u0440\u043e\u0433\u0435 2020? \u0421\u0435\u0433\u043e\u0434\u043d\u044f NFC \u043e\u0431\u0440\u0435\u043b\u043e \u0441\u0432\u043e\u044e \u0440\u0435\u0430\u043b\u044c\u043d\u0443\u044e \u0436\u0438\u0437\u043d\u044c \u0438 \u043f\u0435\u0440\u0435\u0441\u0442\u0430\u043b\u043e \u0431\u044b\u0442\u044c \u0433\u0438\u043a\u043e\u0432\u0441\u043a\u043e\u0439 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0435\u0439 \u0434\u043b\u044f \u0431\u0440\u0435\u043b\u043e\u043a\u043e\u0432-\u0442\u043e\u043a\u0435\u043d\u043e\u0432. \u0422\u0435\u043f\u0435\u0440\u044c \u044d\u0442\u043e \u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-53924","post","type-post","status-publish","format-standard","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0417\u0434\u0440\u0430\u0432\u0441\u0442\u0432\u0443\u0439\u0442\u0435, \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0425\u0430\u0431\u0440\u0430!\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/chto-takoe-nfc-i-kak-on-rabotaet-osvezhim-osnovy\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<meta property=\"og:locale\" content=\"hu_HU\" \/>\n\t\t<meta property=\"og:site_name\" content=\"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u0427\u0442\u043e \u0442\u0430\u043a\u043e\u0435 NFC \u0438 \u043a\u0430\u043a \u043e\u043d \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442. \u041e\u0441\u0432\u0435\u0436\u0438\u043c \u043e\u0441\u043d\u043e\u0432\u044b? | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u0417\u0434\u0440\u0430\u0432\u0441\u0442\u0432\u0443\u0439\u0442\u0435, \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0425\u0430\u0431\u0440\u0430!\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/chto-takoe-nfc-i-kak-on-rabotaet-osvezhim-osnovy\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2019-12-12T21:00:00+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2020-02-18T11:01:52+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47 Mi az NFC \u00e9s hogyan m\u0171k\u00f6dik? 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