কী অর্থ এই QR অক্ষর দু’টির?

[{ "selector": ".btfaz-a", "duration": "500ms", "fill": "forwards", "delay": "500ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": "1"} ] }, { "selector": ".izslr-a", "duration": "500ms", "fill": "forwards", "delay": "750ms", "keyframes": [ {"offset": 0, "transform": "translateX(-334.58666666666636px) scale(0.15)", "opacity": "1"}, {"offset": 1, "transform": "translateX(0) scale(1)", "opacity": "1"} ] }, { "selector": ".kmpmt-a", "duration": "500ms", "fill": "forwards", "delay": "1250ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": "1"} ] }, { "selector": ".rgxpi-a", "duration": "500ms", "fill": "forwards", "delay": "750ms", "keyframes": [ {"offset": 0, "transform": "translateX(calc(360px - 48px)) scale(0.15)", "opacity": "1"}, {"offset": 1, "transform": "translateX(0px) scale(1)", "opacity": "1"} ] }]

গত কয়েক বছরে অনলাইন লেনদেনের দৌলতে QR কোড এখন বেশ পরিচিত বিষয়। কিন্তু কী এই QR কোড?

[{ "selector": ".mpksn-a", "duration": "500ms", "fill": "forwards", "delay": "750ms", "keyframes": [ {"offset": 0, "transform": "translateX(-331px) scale(0.15)", "opacity": "1"}, {"offset": 1, "transform": "translateX(0) scale(1)", "opacity": "1"} ] }, { "selector": ".gzcbp-a", "duration": "500ms", "fill": "forwards", "delay": "1250ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": "1"} ] }, { "selector": ".oaclg-a", "duration": "500ms", "fill": "forwards", "delay": "750ms", "keyframes": [ {"offset": 0, "transform": "translateX(calc(360px - 48px)) scale(0.15)", "opacity": "1"}, {"offset": 1, "transform": "translateX(0px) scale(1)", "opacity": "1"} ] }]

আসলে QR কোড কথাটি মধ্যে থাকা QR অক্ষর দু’টির পুরো কথা হল ‘ক্যুইক রেসপন্স’।

[{ "selector": ".tmzek-a", "duration": "500ms", "fill": "forwards", "delay": "750ms", "keyframes": [ {"offset": 0, "transform": "translateX(-331px) scale(0.15)", "opacity": "1"}, {"offset": 1, "transform": "translateX(0) scale(1)", "opacity": "1"} ] }, { "selector": ".pbkxp-a", "duration": "500ms", "fill": "forwards", "delay": "1250ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": "1"} ] }, { "selector": ".waqwg-a", "duration": "500ms", "fill": "forwards", "delay": "750ms", "keyframes": [ {"offset": 0, "transform": "translateX(calc(360px - 48px)) scale(0.15)", "opacity": "1"}, {"offset": 1, "transform": "translateX(0px) scale(1)", "opacity": "1"} ] }]

এটি একধরনের ট্রেডমার্ক বা টু-ডি বার কোড, যাতে সাজানো থাকে ডট ম্যাট্রিক্স।

[{ "selector": ".eoqos-a", "duration": "500ms", "fill": "forwards", "delay": "1000ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": "1"} ] }]

১৯৯৪ সালে ডেনসো ওয়েভ নামে একটি জাপানি অটোমোটিভ সংস্থা প্রথম এটি তৈরি করেছিল। [{ "selector": ".dsubb-a", "duration": "500ms", "fill": "forwards", "delay": "750ms", "keyframes": [ {"offset": 0, "transform": "translateX(calc(360px - 23px)) scale(0.15)", "opacity": "1"}, {"offset": 1, "transform": "translateX(0px) scale(1)", "opacity": "1"} ] }, { "selector": ".peuqs-a", "duration": "500ms", "fill": "forwards", "delay": "750ms", "keyframes": [ {"offset": 0, "transform": "translateX(-310px) scale(0.15)", "opacity": "1"}, {"offset": 1, "transform": "translateX(0) scale(1)", "opacity": "1"} ] }, { "selector": ".aorrl-a", "duration": "500ms", "fill": "forwards", "delay": "1250ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": "1"} ] }]

পরবর্তীকালে এটি সারা বিশ্বে দারুন জনপ্রিয় হয়। আসলে প্রচলিত UPC বারকোডের তুলনায় এটি অনেক সহজ।

[{ "selector": ".zxeli-a", "duration": "500ms", "fill": "forwards", "delay": "500ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": "1"} ] }]

সাদার উপর কালো বর্গাকার একটি স্কোয়্যার গ্রিড-ই হল QR কোড [{ "selector": ".jwznz-a", "duration": "500ms", "fill": "forwards", "delay": "750ms", "keyframes": [ {"offset": 0, "transform": "translateX(calc(360px - 23px)) scale(0.15)", "opacity": "1"}, {"offset": 1, "transform": "translateX(0px) scale(1)", "opacity": "1"} ] }, { "selector": ".ejlps-a", "duration": "500ms", "fill": "forwards", "delay": "750ms", "keyframes": [ {"offset": 0, "transform": "translateX(-310px) scale(0.15)", "opacity": "1"}, {"offset": 1, "transform": "translateX(0) scale(1)", "opacity": "1"} ] }, { "selector": ".xcika-a", "duration": "500ms", "fill": "forwards", "delay": "1250ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": "1"} ] }]

এই কোড স্ক্যান করে তথ্য দিতে পারে যে কোনও ইমেজিং সিস্টেম, যেমন একটি টেলিস্কোপ বা বিল্ট-ইন ক্যামেরা-সহ কোনও স্মার্টফোন, বা QR রিডার।

[{ "selector": ".gongx-a", "duration": "500ms", "fill": "forwards", "delay": "1000ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": "1"} ] }]

আসলে এটি একধরনের মেশিন-রিডেবল অপটিক্যাল লেবেল যা কোনও পণ্য বা বস্তুর সম্পর্কে তথ্য দেয়।

[{ "selector": ".bwxcj-a", "duration": "500ms", "fill": "forwards", "delay": "500ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": "1"} ] }]

ইমেজিং ডিভাইস স্ক্যান করার পরে কোডের ভিতরে থাকা বিন্দুগুলি সংখ্যা বা অক্ষরে রূপান্তরিত হয়। [{ "selector": ".ssmpp-a", "duration": "500ms", "fill": "forwards", "delay": "750ms", "keyframes": [ {"offset": 0, "transform": "translateX(calc(360px - 25px)) scale(0.15)", "opacity": "1"}, {"offset": 1, "transform": "translateX(0px) scale(1)", "opacity": "1"} ] }, { "selector": ".djcqd-a", "duration": "500ms", "fill": "forwards", "delay": "750ms", "keyframes": [ {"offset": 0, "transform": "translateX(-310px) scale(0.15)", "opacity": "1"}, {"offset": 1, "transform": "translateX(0) scale(1)", "opacity": "1"} ] }, { "selector": ".rlmdd-a", "duration": "500ms", "fill": "forwards", "delay": "1250ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": "1"} ] }]

কোনও ভাবেই দু’টি QR কোডে একই প্যাটার্ন থাকতে পারে না। [{ "selector": ".sxwzo-a", "duration": "500ms", "fill": "forwards", "delay": "750ms", "keyframes": [ {"offset": 0, "transform": "translateX(calc(360px - 23px)) scale(0.15)", "opacity": "1"}, {"offset": 1, "transform": "translateX(0px) scale(1)", "opacity": "1"} ] }, { "selector": ".eumon-a", "duration": "500ms", "fill": "forwards", "delay": "750ms", "keyframes": [ {"offset": 0, "transform": "translateX(-310px) scale(0.15)", "opacity": "1"}, {"offset": 1, "transform": "translateX(0) scale(1)", "opacity": "1"} ] }, { "selector": ".cqzdj-a", "duration": "500ms", "fill": "forwards", "delay": "1250ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": "1"} ] }]

আরও স্টোরিজের জন্য ক্লিক করুন

[{ "selector": ".xlagi-a", "duration": "500ms", "fill": "forwards", "delay": "500ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": "1"} ] }, { "selector": ".ergik-a", "duration": "500ms", "fill": "forwards", "delay": "1000ms", "keyframes": [ {"offset": 0, "transform": "translateY(-391px)", "opacity": "1"}, {"offset": 1, "transform": "translateY(0)", "opacity": "1"} ] }, { "selector": ".cepmp-a", "duration": "500ms", "fill": "forwards", "delay": "1450ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": "1"} ] }, { "selector": ".jnbur-a", "duration": "500ms", "fill": "forwards", "delay": "750ms", "keyframes": [ {"offset": 0, "transform": "translateY(-366px)", "opacity": "1"}, {"offset": 1, "transform": "translateY(0)", "opacity": "1"} ] }] ক্লিক করুন