{"id":498144,"date":"2022-10-03T19:26:16","date_gmt":"2022-10-03T16:26:16","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/how-do-qr-codes-work-review-geek\/"},"modified":"2022-10-03T19:26:16","modified_gmt":"2022-10-03T16:26:16","slug":"how-do-qr-codes-work-review-geek","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/how-do-qr-codes-work-review-geek\/","title":{"rendered":"#How Do QR Codes Work? \u2013 Review Geek"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a2ddd14d6fef\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a2ddd14d6fef\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/how-do-qr-codes-work-review-geek\/#%E2%80%9CHow_Do_QR_Codes_Work_%E2%80%93_Review_Geek%E2%80%9D\" >&#8220;How Do QR Codes Work? \u2013 Review Geek&#8221;<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/buradabiliyorum.com\/en\/how-do-qr-codes-work-review-geek\/#What_Is_a_QR_Code\" >What Is a QR Code?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/buradabiliyorum.com\/en\/how-do-qr-codes-work-review-geek\/#How_Do_QR_Codes_Work\" >How Do QR Codes Work?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/buradabiliyorum.com\/en\/how-do-qr-codes-work-review-geek\/#Every_Phone_Has_a_Built-In_QR_Code_Scanner\" >Every Phone Has a Built-In QR Code Scanner<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/buradabiliyorum.com\/en\/how-do-qr-codes-work-review-geek\/#How_to_Create_Your_Own_QR_Codes_for_Free\" >How to Create Your Own QR Codes for Free<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%E2%80%9CHow_Do_QR_Codes_Work_%E2%80%93_Review_Geek%E2%80%9D\"><\/span>&#8220;How Do QR Codes Work? \u2013 Review Geek&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<div id=\"article-content-area\">\n<figure style=\"width: 1920px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"type:primaryImage wp-image-131425 size-full\" data-pagespeed-no-defer=\"\" src=\"https:\/\/www.reviewgeek.com\/p\/uploads\/2022\/09\/33fd4fcf.png?width=1200\" alt=\"A person scanning a QR code with their phone.\" width=\"1920\" height=\"1080\" data-crediturl=\"https:\/\/www.shutterstock.com\/image-photo\/qr-code-scanning-payment-verification-hand-1569659563\" data-credittext=\"Sasin Paraksa \/ Shutterstock.com\"\/><figcaption class=\"wp-caption-text\"><span class=\"type:primaryImage imagecredit\"><a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/www.shutterstock.com\/image-photo\/qr-code-scanning-payment-verification-hand-1569659563\">Sasin Paraksa \/ Shutterstock.com<\/a><\/span><\/figcaption><\/figure>\n<p>The humble QR code often feels like a trend or an annoyance. But this <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/technology\/\" data-internallinksmanager029f6b8e52c=\"4\" title=\"Technology\" target=\"_blank\" rel=\"noopener\">technology<\/a>, which is over 25 years old, is much more useful and brilliant than it seems. And once you learn how they work, you may find yourself generating QR codes and sticking them around your home!<\/p>\n<h2 role=\"heading\" aria-level=\"2\"><span class=\"ez-toc-section\" id=\"What_Is_a_QR_Code\"><\/span><a rel=\"nofollow noopener\" target=\"_blank\" name=\"autotoc_anchor_0\">What Is a QR Code?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The now-common QR code (short for \u201cQuick Response\u201d code) is a modern adaptation of the typical UPC barcode. It\u2019s a machine-readable label that contains data, which a computer or smartphone can interpret faster than plain text or code.<\/p>\n<p>Traditional UPC barcodes contain just twelve numbers, which may correspond to a grocery item or another product.\u00a0But a QR code can store significantly more data\u20147,089 numbers, 4,296 letters, or 1,817 Japanese Kanji. You can use a QR code to store and recall website URLs, shipping information, automotive parts numbers, and other complex information.<\/p>\n<p>But in most situations, QR codes are just shortcuts to websites or apps. A fast-casual restaurant may use QR codes to show customers its online menu, for example, while a clinic might ask patients to scan a QR code and fill out web-based paperwork.<\/p>\n<h2 role=\"heading\" aria-level=\"2\"><span class=\"ez-toc-section\" id=\"How_Do_QR_Codes_Work\"><\/span><a rel=\"nofollow noopener\" target=\"_blank\" name=\"autotoc_anchor_1\">How Do QR Codes Work?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure style=\"width: 1920px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-131424 size-full\" data-pagespeed-lazy-src=\"https:\/\/www.reviewgeek.com\/p\/uploads\/2022\/09\/f4b77d31.png\" alt=\"A QR code that redirects to the Review Geek website.\" width=\"1920\" height=\"1080\" data-credittext=\"Review Geek\" src=\"\/pagespeed_static\/1.JiBnMqyl6S.gif\" onload=\"pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon(this);\" onerror=\"this.onerror=null;pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon(this);\"\/><figcaption class=\"wp-caption-text\"><span class=\"imagecredit\">Review Geek<\/span><\/figcaption><\/figure>\n<p>To human eyes, QR codes look like a bunch of random pixels. But the QR code design is ingenious\u2014not only does it contain a ton of data, but it\u2019s purpose-built for quick, easy, and reliable scanning.<\/p>\n<p>Notice the three large squares in the corners of a QR code. Computers use these squares to determine the code\u2019s orientation, so even if you scan a QR code upside-down, it will work correctly. (When a QR code is \u201cupright,\u201d there isn\u2019t a huge square in its bottom right corner.)<\/p>\n<p>The pixels directly outside of these large squares indicate a QR code\u2019s version number and, more importantly, its \u201cformat.\u201d If you make a QR code <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/www.howtogeek.com\/667423\/how-to-share-wi-fi-passwords-from-android-to-any-smartphone\/\">to share your Wi-Fi login<\/a>, for example, it will use formatting to tell phones or computers, \u201cthis is the name and password for an internet connection.\u201d<\/p>\n<p>And finally, there are the remaining pixels on a QR code. Some of these pixels are for error correction and \u201ctiming patterns,\u201d which simply increase a QR code\u2019s readability. But the bulk of these pixels represent raw data.<\/p>\n<p>The data pixels on a QR code are clustered in small patterns, which communicate more information than simple black and white dots. And interestingly, this data is scanned both horizontally and vertically, which further increases data density. (Traditional barcodes are only scanned in one direction.)<\/p>\n<p>Technically speaking, you\u00a0<em>can<\/em> decode a QR code by hand. But you already have a QR code scanner in your pocket, so there\u2019s no need to treat this stuff like Nancy Drew.<\/p>\n<h2 role=\"heading\" aria-level=\"2\"><span class=\"ez-toc-section\" id=\"Every_Phone_Has_a_Built-In_QR_Code_Scanner\"><\/span><a rel=\"nofollow noopener\" target=\"_blank\" name=\"autotoc_anchor_2\">Every Phone Has a Built-In QR Code Scanner<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure style=\"width: 1920px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-131427\" data-pagespeed-lazy-src=\"https:\/\/www.reviewgeek.com\/p\/uploads\/2022\/09\/b9c0cc59.png\" alt=\"Scanning a QR code with the iPhone's camera.\" width=\"1920\" height=\"1080\" src=\"\/pagespeed_static\/1.JiBnMqyl6S.gif\" onload=\"pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon(this);\" onerror=\"this.onerror=null;pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon(this);\"\/><figcaption class=\"wp-caption-text\"><span class=\"imagecredit\"><a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/support.apple.com\/en-us\/HT208843\">Apple<\/a><\/span><\/figcaption><\/figure>\n<p>Modern versions of Android and iOS have a built-in QR code scanner. You don\u2019t need to download any apps\u2014just open the camera on your phone and point it at a QR code. Depending on the formatting of this code, your phone may prompt you to open a URL, visit an App Store page, or log into a Wi-Fi connection.<\/p>\n<p>Your phone can also scan QR codes from photos or images you\u2019ve taken. On iOS, open the Photos app and find the photo you took of a QR code. Press and hold on the code, and a drop-down menu will give you options like \u201copen this URL.\u201d<\/p>\n<p>On Android, this process requires <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.google.ar.lens&amp;hl=en_IN&amp;gl=US\">Google Lens<\/a>\u00a0or <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.google.android.apps.photos&amp;hl=en_US&amp;gl=US\">Google Photos<\/a>. In Google Lens, open your photo of a QR code, and it will scan automatically. If you\u2019re using Google Photos, open an image of a QR code, press the three-dot menu in the right corner of your screen, and select \u201csearch.\u201d\u00a0(This process also works in the <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/apps.apple.com\/us\/app\/google-photos\/id962194608?at=1010l392g&amp;ct=rg131221\">Google Photos app on iOS<\/a>.)<\/p>\n<p>Obviously, you shouldn\u2019t scan random QR codes that you don\u2019t trust. Scammers may use these codes to redirect people toward malicious websites, or connect users to insecure networks. But your phone will always ask if you want to interact with a code you scan, and QR codes are usually safe, so just use common sense and you\u2019ll be alright.<\/p>\n<h2 role=\"heading\" aria-level=\"2\"><span class=\"ez-toc-section\" id=\"How_to_Create_Your_Own_QR_Codes_for_Free\"><\/span><a rel=\"nofollow noopener\" target=\"_blank\" name=\"autotoc_anchor_3\">How to Create Your Own QR Codes for Free<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure style=\"width: 1920px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-131423\" data-pagespeed-lazy-src=\"https:\/\/www.reviewgeek.com\/p\/uploads\/2022\/09\/a6d34098.png\" alt=\"Creating a QR code for a website in Chrome.\" width=\"1920\" height=\"1080\" src=\"\/pagespeed_static\/1.JiBnMqyl6S.gif\" onload=\"pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon(this);\" onerror=\"this.onerror=null;pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon(this);\"\/><figcaption class=\"wp-caption-text\"><span class=\"imagecredit\">Andrew Heinzman \/ Review Geek<\/span><\/figcaption><\/figure>\n<p>Unlike UPC barcodes, which are regulated, QR codes are an open standard. Individuals or businesses can generate and use QR codes for free, without any licensing or registration. Unfortunately, most QR code generators cost money.<\/p>\n<p>But there are plenty of ways to generate QR codes for free. If you\u2019re using Google Chrome or Microsoft Edge on desktop or mobile, you can create a downloadable and printable QR code for any URL\u2014just open the website of your choice, press the share button (the box with an arrow in your toolbar), and select \u201cCreate QR Code.\u201d (Browser extensions can duplicate this functionality in Firefox or Safari.)<\/p>\n<p>And if you want to quickly share your Wi-Fi password with a friend, you can simply <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/www.howtogeek.com\/667423\/how-to-share-wi-fi-passwords-from-android-to-any-smartphone\/\">make a QR code<\/a> from your phone\u2019s internet settings. When scanned, this QR code will prompt a user to automatically join a Wi-Fi network. You can even print it out and stick it on your fridge, if you\u2019re so inclined.<\/p>\n<p>Bear in mind that the information on a QR code is \u201cstatic,\u201d meaning that it can\u2019t be updated or changed. If you run a business, I suggest looking into \u201cdynamic\u201d QR code services. Such services, which usually cost money, let you print a redirect link on a QR code. You can change where this link points to at any time, effectively \u201cchanging the URL\u201d on a QR code you\u2019ve already printed.\n<\/p><\/div>\n<p><script>\nsetTimeout(function(){\n  !function(f,b,e,v,n,t,s)\n  {if(f.fbq)return;n=f.fbq=function(){n.callMethod?\n  n.callMethod.apply(n,arguments):n.queue.push(arguments)};\n  if(!f._fbq)f._fbq=n;n.push=n;n.loaded=!0;n.version='2.0';\n  n.queue=[];t=b.createElement(e);t.async=!0;\n  t.src=v;s=b.getElementsByTagName(e)[0];\n  s.parentNode.insertBefore(t,s)}(window, document,'script',\n  'https:\/\/connect.facebook.net\/en_US\/fbevents.js');\n  fbq('init', '1137093656460433');\n  fbq('track', 'PageView');\n  },3000);\n<\/script><\/p>\n<blockquote><p><strong><span style=\"color: #ff6600;\">If you liked the article, do not forget to share it with your friends. Follow us on\u00a0<span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/news.google.com\/publications\/CAAqBwgKMLG0nwswvr63Aw\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Google News<\/a><\/span>\u00a0too, click on the star and choose us from your favorites.<\/span><\/strong><\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\">For forums sites go to <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/forum.buradabiliyorum.com\/\" target=\"_blank\" rel=\"noopener\">Forum.BuradaBiliyorum.Com<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\"><strong>If you want to read more like this article, you can visit our <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/en.buradabiliyorum.com\/technology\/\" target=\"_blank\" rel=\"noopener\">Technology category.<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<p><span style=\"color: black;\"><a style=\"color: #ff9900;\" href=\"https:\/\/www.reviewgeek.com\/131221\/how-do-qr-codes-work\/\" target=\"_blank\" rel=\"noopener\">Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;How Do QR Codes Work? \u2013 Review Geek&#8221; Sasin Paraksa \/ Shutterstock.com The humble QR code often feels like a trend or an annoyance. But this technology, which is over 25 years old, is much more useful and brilliant than it seems. And once you learn how they work, you may find yourself generating QR&#8230;<\/p>\n","protected":false},"author":1,"featured_media":498145,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/www.reviewgeek.com\/p\/uploads\/2022\/09\/33fd4fcf.png","fifu_image_alt":"","footnotes":""},"categories":[18],"tags":[],"class_list":["post-498144","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/498144","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=498144"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/498144\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/498145"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=498144"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=498144"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=498144"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}