{"id":48090,"date":"2025-12-10T02:24:35","date_gmt":"2025-12-10T02:24:35","guid":{"rendered":"https:\/\/staging.pageloot.com\/uncategorized\/qr-code-usability-best-practices\/"},"modified":"2026-04-22T13:14:08","modified_gmt":"2026-04-22T13:14:08","slug":"qr-code-usability-best-practices","status":"publish","type":"post","link":"https:\/\/pageloot.com\/vi\/blog\/qr-code-usability-best-practices\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn c\u1ea3i thi\u1ec7n t\u00ednh d\u1ec5 s\u1eed d\u1ee5ng c\u1ee7a m\u00e3 QR"},"content":{"rendered":"<p class=\"wp-block-paragraph\">T\u1ea1i sao m\u00e3 QR c\u1ee7a b\u1ea1n kh\u00f4ng thu h\u00fat \u0111\u01b0\u1ee3c kh\u00e1ch h\u00e0ng ngay c\u1ea3 khi thi\u1ebft k\u1ebf tr\u00f4ng chuy\u00ean nghi\u1ec7p? Ma s\u00e1t trong qu\u00e1 tr\u00ecnh qu\u00e9t th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn c\u00e1c t\u01b0\u01a1ng t\u00e1c b\u1ecb b\u1ecf d\u1edf v\u00e0 doanh thu ti\u1ebfp th\u1ecb b\u1ecb m\u1ea5t. H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p c\u00e1c ti\u00eau chu\u1ea9n kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng c\u00f3 th\u1ec3 h\u00e0nh \u0111\u1ed9ng \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a m\u00e3 c\u1ee7a b\u1ea1n nh\u1eb1m \u0111\u1ea1t t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i cao h\u01a1n v\u00e0 tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng li\u1ec1n m\u1ea1ch.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ch\u1ecdn K\u00edch th\u01b0\u1edbc T\u1ed1i \u01b0u v\u00e0 Kho\u1ea3ng c\u00e1ch Qu\u00e9t<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">K\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd l\u00e0 r\u00e0o c\u1ea3n k\u1ef9 thu\u1eadt ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u1ec3 qu\u00e9t th\u00e0nh c\u00f4ng. N\u1ebfu m\u00e3 qu\u00e1 nh\u1ecf, camera \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh kh\u00f4ng th\u1ec3 ph\u00e2n gi\u1ea3i c\u00e1c m\u00f4-\u0111un ri\u00eang l\u1ebb, \u0111\u1eb7c bi\u1ec7t n\u1ebfu m\u1eadt \u0111\u1ed9 d\u1eef li\u1ec7u cao. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o tr\u1ea3i nghi\u1ec7m \u0111\u00e1ng tin c\u1eady, b\u1ea1n n\u00ean \u0111\u1eb7t m\u1ee5c ti\u00eau k\u00edch th\u01b0\u1edbc in t\u1ed1i thi\u1ec3u l\u00e0 0,8 x 0,8 inch (2 x 2 cm) cho c\u00e1c v\u1eadt ph\u1ea9m \u1edf c\u1ef1 ly g\u1ea7n nh\u01b0 danh thi\u1ebfp ho\u1eb7c bao b\u00ec s\u1ea3n ph\u1ea9m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi thi\u1ebft k\u1ebf cho m\u00e0n h\u00ecnh l\u1edbn h\u01a1n, h\u00e3y tu\u00e2n th\u1ee7 t\u1ef7 l\u1ec7 qu\u00e9t 10:1. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 n\u1ebfu b\u1ea1n mong \u0111\u1ee3i ng\u01b0\u1eddi d\u00f9ng \u0111\u1ee9ng c\u00e1ch xa 10 feet, m\u00e3 QR ph\u1ea3i r\u1ed9ng \u00edt nh\u1ea5t 1 foot \u0111\u1ec3 \u0111\u01b0\u1ee3c ch\u1ee5p ch\u00ednh x\u00e1c. Quy t\u1eafc n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft cho bi\u1ec3n b\u00e1o, m\u00e0n h\u00ecnh c\u1eeda s\u1ed5 ho\u1eb7c <a href=\"https:\/\/pageloot.com\/vi\/qr-codes-on\/products\/\">M\u00e3 QR tr\u00ean \u00e1p ph\u00edch<\/a> n\u01a1i kho\u1ea3ng c\u00e1ch gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u00e3 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/03\/simple-square-infographic-on-white-background-about-qr-code-usability-best-pract-8641-042f14049cd5.webp\" alt=\"M\u1eb9o v\u1ec1 m\u00e3 QR\" \/><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>T\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t chi\u1ebfn d\u1ecbch c\u1ee7a b\u1ea1n<\/strong> D\u00f9ng c\u1ee7a ch\u00fang t\u00f4i <a href=\"https:\/\/pageloot.com\/vi\/qr-code-generator\/\">Tr\u00ecnh t\u1ea1o m\u00e3 QR \u0111\u1ed9ng c\u1ee7a ch\u00fang t\u00f4i<\/a> \u0111\u1ec3 t\u1ea1o m\u00e3 v\u1eabn c\u00f3 th\u1ec3 qu\u00e9t \u0111\u01b0\u1ee3c ngay c\u1ea3 v\u1edbi t\u1ea3i d\u1eef li\u1ec7u cao b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng URL chuy\u1ec3n h\u01b0\u1edbng r\u00fat g\u1ecdn.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Thi\u1ebft k\u1ebf cho \u0110\u1ed9 t\u01b0\u01a1ng ph\u1ea3n v\u00e0 \u0110\u1ed9 r\u00f5 r\u00e0ng c\u1ee7a D\u1eef li\u1ec7u<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00e1y qu\u00e9t d\u1ef1a v\u00e0o s\u1ef1 ph\u00e2n bi\u1ec7t gi\u1eefa c\u00e1c m\u00f4-\u0111un s\u00e1ng v\u00e0 t\u1ed1i \u0111\u1ec3 gi\u1ea3i m\u00e3 th\u00f4ng tin. H\u00e3y ngh\u0129 m\u00e1y qu\u00e9t nh\u01b0 m\u1ed9t thi\u1ebft b\u1ecb \u0111\u1ecdc t\u1ed1c \u0111\u1ed9 cao c\u1ea7n c\u00e1c c\u1ea1nh s\u1eafc n\u00e9t \u0111\u1ec3 ph\u00e2n bi\u1ec7t gi\u1eefa c\u00e1c \u0111i\u1ec3m d\u1eef li\u1ec7u \u201cb\u1eadt\u201d v\u00e0 \u201ct\u1eaft\u201d. M\u1eb7c d\u00f9 <a href=\"https:\/\/pageloot.com\/vi\/how-to\/custom-qr-code\/\">t\u00f9y ch\u1ec9nh m\u00e3 QR c\u1ee7a b\u1ea1n<\/a> v\u1edbi m\u00e0u s\u1eafc th\u01b0\u01a1ng hi\u1ec7u c\u00f3 th\u1ec3 t\u0103ng m\u1ee9c \u0111\u1ed9 t\u01b0\u01a1ng t\u00e1c l\u00ean 18%, b\u1ea1n ph\u1ea3i \u01b0u ti\u00ean kh\u1ea3 n\u0103ng qu\u00e9t h\u01a1n t\u00ednh th\u1ea9m m\u1ef9.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>  <strong>T\u1ed1i tr\u00ean S\u00e1ng<\/strong>: Lu\u00f4n \u0111\u1eb7t n\u1ec1n t\u1ed1i tr\u00ean n\u1ec1n s\u00e1ng v\u00ec m\u00e0u t\u1ed1i h\u01a1n h\u1ea5p th\u1ee5 nhi\u1ec1u \u00e1nh s\u00e1ng h\u01a1n, trong khi m\u00e0u s\u00e1ng h\u01a1n ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng.<\/li>\n<li>  <strong>T\u1ef7 l\u1ec7 t\u01b0\u01a1ng ph\u1ea3n<\/strong>: \u0110\u1eb7t m\u1ee5c ti\u00eau t\u1ef7 l\u1ec7 t\u01b0\u01a1ng ph\u1ea3n \u00edt nh\u1ea5t 4,5:1 \u0111\u1ec3 \u0111\u00e1p \u1ee9ng <a href=\"https:\/\/pageloot.com\/vi\/blog\/qr-code-color-contrast-best-practices\/\">c\u00e1c ph\u01b0\u01a1ng ph\u00e1p hay nh\u1ea5t v\u1ec1 \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n m\u00e0u c\u1ee7a m\u00e3 QR<\/a> v\u00e0 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng hi\u1ec3n th\u1ecb cho t\u1ea5t c\u1ea3 ng\u01b0\u1eddi d\u00f9ng.<\/li>\n<li>  <strong>V\u00f9ng y\u00ean t\u0129nh<\/strong>: Duy tr\u00ec m\u1ed9t \u0111\u01b0\u1eddng vi\u1ec1n r\u00f5 r\u00e0ng, hay \u201cv\u00f9ng y\u00ean t\u0129nh\u201d, xung quanh m\u00e3 r\u1ed9ng \u00edt nh\u1ea5t b\u1ed1n m\u00f4-\u0111un \u0111\u1ec3 ng\u0103n c\u00e1c \u0111\u1ed3 h\u1ecda xung quanh l\u00e0m nhi\u1ec5u m\u00e1y qu\u00e9t.<\/li>\n<li>  <strong>M\u1eabu t\u1ed1i gi\u1ea3n<\/strong>: S\u1eed d\u1ee5ng <a href=\"https:\/\/pageloot.com\/vi\/qr-code-marketing\/static-vs-dynamic-qr-codes\/\">m\u00e3 QR t\u0129nh v\u00e0 \u0111\u1ed9ng<\/a> \u0111\u1ec3 qu\u1ea3n l\u00fd m\u1eadt \u0111\u1ed9 d\u1eef li\u1ec7u; m\u00e3 \u0111\u1ed9ng gi\u1eef cho m\u1eabu \u0111\u01a1n gi\u1ea3n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng URL chuy\u1ec3n h\u01b0\u1edbng ng\u1eafn, gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 t\u1ed1c \u0111\u1ed9 qu\u00e9t.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"wp-block-table__content\">\n<thead>\n<tr>\n<th>T\u00ednh n\u0103ng thi\u1ebft k\u1ebf<\/th>\n<th>T\u00e1c \u0111\u1ed9ng \u0111\u1ebfn kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng<\/th>\n<th>Khuy\u1ebfn ngh\u1ecb<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u0110\u1ed9 t\u01b0\u01a1ng ph\u1ea3n m\u00e0u s\u1eafc<\/strong><\/td>\n<td>Cao<\/td>\n<td>S\u1eed d\u1ee5ng m\u00e0u xanh navy \u0111\u1eadm ho\u1eb7c \u0111en tr\u00ean n\u1ec1n tr\u1eafng\/be.<\/td>\n<\/tr>\n<tr>\n<td><strong>S\u1eeda l\u1ed7i<\/strong><\/td>\n<td>Trung bi\u0340nh<\/td>\n<td>S\u1eed d\u1ee5ng C\u1ea5p \u0111\u1ed9 H (30%) n\u1ebfu b\u1ea1n \u0111ang nh\u00fang logo th\u01b0\u01a1ng hi\u1ec7u.<\/td>\n<\/tr>\n<tr>\n<td><strong>B\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n<\/strong><\/td>\n<td>Cao<\/td>\n<td>Ch\u1ecdn v\u1eadt li\u1ec7u m\u1edd \u0111\u1ec3 tr\u00e1nh ch\u00f3i l\u00e0m \u201cm\u00f9\u201d camera.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">V\u1ecb tr\u00ed chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ec3 t\u01b0\u01a1ng t\u00e1c t\u1ed1i \u0111a<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ecb tr\u00ed chi\u1ebfn l\u01b0\u1ee3c quy\u1ebft \u0111\u1ecbnh li\u1ec7u ng\u01b0\u1eddi d\u00f9ng c\u00f3 nh\u1eadn th\u1ea5y m\u00e3 c\u1ee7a b\u1ea1n hay ho\u00e0n to\u00e0n b\u1ecf qua. Nghi\u00ean c\u1ee9u ch\u1ec9 ra r\u1eb1ng <a href=\"https:\/\/pageloot.com\/vi\/qr-codes-on\/products\/\">M\u00e3 QR tr\u00ean bao b\u00ec<\/a> c\u00f3 m\u1ee9c \u0111\u1ed9 t\u01b0\u01a1ng t\u00e1c cao h\u01a1n ba \u0111\u1ebfn b\u1ed1n l\u1ea7n so v\u1edbi bi\u1ec3n b\u00e1o \u1edf xa v\u00ec ng\u01b0\u1eddi d\u00f9ng \u0111\u00e3 t\u01b0\u01a1ng t\u00e1c v\u1eadt l\u00fd v\u1edbi s\u1ea3n ph\u1ea9m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00e1nh \u0111\u1eb7t m\u00e3 tr\u00ean c\u00e1c b\u1ec1 m\u1eb7t ph\u1ea3n chi\u1ebfu ho\u1eb7c cong, ch\u1eb3ng h\u1ea1n nh\u01b0 chai th\u1ee7y tinh ho\u1eb7c v\u1eadt li\u1ec7u c\u00e1n b\u00f3ng, v\u00ec ch\u00fang t\u1ea1o ra \u0111\u1ed9 ch\u00f3i v\u00e0 bi\u1ebfn d\u1ea1ng. \u0110\u1eb7t m\u00e3 \u1edf ngang t\u1ea7m m\u1eaft b\u1ea5t c\u1ee9 khi n\u00e0o c\u00f3 th\u1ec3 \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi h\u00e0nh vi t\u1ef1 nhi\u00ean c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. \u0110\u1ed1i v\u1edbi m\u00f4i tr\u01b0\u1eddng b\u00e1n l\u1ebb, vi\u1ec7c \u0111\u1eb7t m\u00e3 t\u1ea1i \u0111i\u1ec3m b\u00e1n h\u00e0ng thu h\u00fat ng\u01b0\u1eddi d\u00f9ng v\u00e0o th\u1eddi \u0111i\u1ec3m c\u00f3 \u00fd \u0111\u1ecbnh cao nh\u1ea5t. V\u00ed d\u1ee5, s\u1eed d\u1ee5ng m\u1ed9t <a href=\"https:\/\/pageloot.com\/vi\/google-review-qr-code-generator\/\">tr\u00ecnh t\u1ea1o m\u00e3 QR \u0110\u00e1nh gi\u00e1 Google<\/a> tr\u00ean h\u00f3a \u0111\u01a1n ho\u1eb7c b\u1ea3ng \u0111\u1eb7t b\u00e0n gi\u00fap kh\u00e1ch h\u00e0ng d\u1ec5 d\u00e0ng cung c\u1ea5p ph\u1ea3n h\u1ed3i khi tr\u1ea3i nghi\u1ec7m c\u1ee7a h\u1ecd v\u1eabn c\u00f2n trong t\u00e2m tr\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0110\u1ea3m b\u1ea3o thi\u1ebft k\u1ebf to\u00e0n di\u1ec7n v\u00e0 kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng ph\u1ea3i t\u00ednh \u0111\u1ebfn t\u1ea5t c\u1ea3 ng\u01b0\u1eddi d\u00f9ng ti\u1ec1m n\u0103ng, bao g\u1ed3m c\u1ea3 nh\u1eefng ng\u01b0\u1eddi khuy\u1ebft t\u1eadt. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac k\u1ef9 thu\u1eadt s\u1ed1 c\u1ee7a b\u1ea1n mang t\u00ednh to\u00e0n di\u1ec7n, h\u00e3y tu\u00e2n th\u1ee7 c\u00e1c quy t\u1eafc \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp <a href=\"https:\/\/pageloot.com\/vi\/blog\/how-to-make-qr-codes-ada-compliant\/\">H\u01b0\u1edbng d\u1eabn tu\u00e2n th\u1ee7 ADA cho m\u00e3 QR<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/03\/simple-square-illustration-on-white-background-for-an-article-about-accessible-a-9925-e4547b5731fc.webp\" alt=\"Thi\u1ebft k\u1ebf QR d\u1ec5 ti\u1ebfp c\u1eadn\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>  <strong>Chi\u1ec1u cao \u0111\u1eb7t<\/strong>: L\u1eafp \u0111\u1eb7t m\u00e3 trong kho\u1ea3ng t\u1eeb 36 \u0111\u1ebfn 48 inch t\u00ednh t\u1eeb s\u00e0n nh\u00e0 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u00fang v\u1eabn c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi s\u1eed d\u1ee5ng xe l\u0103n.<\/li>\n<li>  <strong>C\u00e1c l\u1ef1a ch\u1ecdn thay th\u1ebf \u00e2m thanh<\/strong>: T\u00edch h\u1ee3p <a href=\"https:\/\/pageloot.com\/vi\/blog\/how-voice-activated-qr-codes-enhance-accessibility\/\">c\u00e1ch m\u00e3 QR k\u00edch ho\u1ea1t b\u1eb1ng gi\u1ecdng n\u00f3i n\u00e2ng cao kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn<\/a> b\u1eb1ng c\u00e1ch k\u1ebft n\u1ed1i ng\u01b0\u1eddi d\u00f9ng v\u1edbi n\u1ed9i dung t\u01b0\u1eddng thu\u1eadt ho\u1eb7c tr\u00ecnh \u0111\u1ecdc m\u00e0n h\u00ecnh.<\/li>\n<li>  <strong>D\u1ea5u hi\u1ec7u x\u00fac gi\u00e1c<\/strong>: Cung c\u1ea5p c\u00e1c t\u00edn hi\u1ec7u v\u1eadt l\u00fd ho\u1eb7c ch\u1eef n\u1ed5i g\u1ea7n m\u00e3 \u0111\u1ec3 gi\u00fap ng\u01b0\u1eddi d\u00f9ng khi\u1ebfm th\u1ecb x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed khu v\u1ef1c qu\u00e9t.<\/li>\n<li>  <strong>Ghi nh\u00e3n r\u00f5 r\u00e0ng<\/strong>: Kh\u00f4ng bao gi\u1edd s\u1eed d\u1ee5ng m\u00e3 QR \u201ctr\u1ea7n tr\u1ee5i\u201d m\u00e0 kh\u00f4ng c\u00f3 ng\u1eef c\u1ea3nh; lu\u00f4n bao g\u1ed3m l\u1eddi k\u00eau g\u1ecdi h\u00e0nh \u0111\u1ed9ng b\u1eb1ng v\u0103n b\u1ea3n nh\u01b0 \u201cQu\u00e9t \u0111\u1ec3 xem th\u1ef1c \u0111\u01a1n\u201d ho\u1eb7c \u201cQu\u00e9t \u0111\u1ec3 xem ch\u1ec9 \u0111\u01b0\u1eddng.\u201d<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>T\u0103ng c\u01b0\u1eddng m\u1ea1ng l\u01b0\u1edbi chuy\u00ean nghi\u1ec7p c\u1ee7a b\u1ea1n<\/strong> T\u1ea1o th\u1ebb li\u00ean h\u1ec7 k\u1ef9 thu\u1eadt s\u1ed1 d\u1ec5 ti\u1ebfp c\u1eadn trong v\u00e0i gi\u00e2y v\u1edbi <a href=\"https:\/\/pageloot.com\/vi\/vcard-qr-code-generator\/\">Tr\u00ecnh t\u1ea1o m\u00e3 QR vCard<\/a>.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Giao th\u1ee9c ki\u1ec3m tra \u0111\u1ed9 tin c\u1eady trong th\u1ebf gi\u1edbi th\u1ef1c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sai l\u1ea7m t\u1ed1n k\u00e9m nh\u1ea5t m\u00e0 m\u1ed9t doanh nghi\u1ec7p c\u00f3 th\u1ec3 m\u1eafc ph\u1ea3i l\u00e0 in h\u00e0ng lo\u1ea1t m\u1ed9t m\u00e3 b\u1ecb l\u1ed7i trong th\u1ef1c t\u1ebf. Vi\u1ec7c ki\u1ec3m tra n\u00ean di\u1ec5n ra trong m\u00f4i tr\u01b0\u1eddng th\u1ef1c t\u1ebf n\u01a1i m\u00e3 s\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, thay v\u00ec ch\u1ec9 tr\u00ean m\u00e0n h\u00ecnh \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ec3m tra m\u00e3 c\u1ee7a b\u1ea1n tr\u00ean nhi\u1ec1u thi\u1ebft b\u1ecb, bao g\u1ed3m \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh cao c\u1ea5p v\u00e0 c\u00e1c m\u1eabu c\u0169 h\u01a1n c\u00f3 camera \u0111\u1ed9 ph\u00e2n gi\u1ea3i th\u1ea5p h\u01a1n, \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh ph\u1ed5 qu\u00e1t <a href=\"https:\/\/pageloot.com\/vi\/blog\/best-practices-for-qr-code-readability\/\">kh\u1ea3 n\u0103ng \u0111\u1ecdc<\/a>. Ki\u1ec3m tra v\u1ecb tr\u00ed d\u01b0\u1edbi c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u00e1nh s\u00e1ng kh\u00e1c nhau \u0111\u1ec3 t\u00ednh \u0111\u1ebfn b\u00f3ng t\u1ed1i ho\u1eb7c \u00e1nh s\u00e1ng y\u1ebfu v\u00e0o bu\u1ed5i t\u1ed1i. Cu\u1ed1i c\u00f9ng, x\u00e1c minh r\u1eb1ng li\u00ean k\u1ebft \u0111\u00edch \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho thi\u1ebft b\u1ecb di \u0111\u1ed9ng v\u00e0 s\u1eed d\u1ee5ng <a href=\"https:\/\/pageloot.com\/vi\/blog\/secure-qr-code-generation-best-practices\/\">ph\u01b0\u01a1ng ph\u00e1p t\u1ea1o m\u00e3 QR an to\u00e0n<\/a> v\u1edbi m\u00e3 h\u00f3a HTTPS \u0111\u1ec3 duy tr\u00ec l\u00f2ng tin c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch \u01b0u ti\u00ean tr\u1ea3i nghi\u1ec7m qu\u00e9t c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, b\u1ea1n c\u00f3 th\u1ec3 bi\u1ebfn m\u1ed9t \u0111\u1ed3 h\u1ecda \u0111\u01a1n gi\u1ea3n th\u00e0nh m\u1ed9t c\u00f4ng c\u1ee5 chuy\u1ec3n \u0111\u1ed5i m\u1ea1nh m\u1ebd. Cho d\u00f9 b\u1ea1n \u0111ang <a href=\"https:\/\/pageloot.com\/vi\/how-to\/business-card-design-qr-code\/\">thi\u1ebft k\u1ebf danh thi\u1ebfp<\/a> ho\u1eb7c tri\u1ec3n khai m\u1ed9t chi\u1ebfn d\u1ecbch b\u00e1n l\u1ebb, vi\u1ec7c tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng n\u00e0y l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 t\u1ed1i \u0111a h\u00f3a l\u1ee3i t\u1ee9c \u0111\u1ea7u t\u01b0 c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-5b6c8823f26f\"><strong class=\"schema-faq-question\">K\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb cho m\u00e3 QR in l\u00e0 bao nhi\u00eau?<\/strong> <p class=\"schema-faq-answer\">For close-range materials like business cards, the minimum size is 0.8 x 0.8 inches (2 x 2 cm). If the code contains high data density or is intended for distant scanning, follow the 10:1 ratio where the code width is one-tenth of the scanning distance.    Why do scanners sometimes fail to read colorful QR codes? Scanners struggle when there is insufficient contrast between the modules and the background. To ensure reliability, maintain at least a 4.5:1 contrast ratio and always use a dark foreground on a light background. Avoid light grays, yellows, or pastels for the modules.    What are the benefits of using dynamic QR codes for usability? Dynamic codes allow you to edit the destination URL without reprinting the physical code. They also use a short URL to keep the module pattern simple and &#8220;airy,&#8221; which makes the code much easier for a QR code scanner to read quickly.<\/p> <\/div> <\/div>","protected":false},"excerpt":{"rendered":"<p>C\u1ea3i thi\u1ec7n m\u1ee9c \u0111\u1ed9 t\u01b0\u01a1ng t\u00e1c c\u1ee7a kh\u00e1ch h\u00e0ng v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p hay nh\u1ea5t v\u1ec1 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng m\u00e3 QR. T\u00ecm hi\u1ec3u v\u1ec1 k\u00edch th\u01b0\u1edbc, \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n m\u00e0u s\u1eafc, v\u1ecb tr\u00ed chi\u1ebfn l\u01b0\u1ee3c v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n ti\u1ebfp c\u1eadn c\u1ee7a ADA.<\/p>","protected":false},"author":17,"featured_media":50312,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[2635],"tags":[],"class_list":["post-48090","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.7 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Guidelines for Improving QR Code Usability<\/title>\n<meta name=\"description\" content=\"Improve customer engagement with QR code usability best practices. Learn about sizing, color contrast, strategic placement, and ADA accessibility standards.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/pageloot.com\/vi\/blog\/qr-code-usability-best-practices\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Guidelines for Improving QR Code Usability\" \/>\n<meta property=\"og:description\" content=\"Improve customer engagement with QR code usability best practices. 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Siim c\u00f3 n\u1ec1n t\u1ea3ng k\u1ef9 thu\u1eadt s\u1ed1 s\u00e2u r\u1ed9ng v\u1edbi h\u01a1n 10 n\u0103m kinh nghi\u1ec7m v\u1eefng ch\u1eafc trong l\u0129nh v\u1ef1c Ph\u1ea7n m\u1ec1m d\u01b0\u1edbi d\u1ea1ng d\u1ecbch v\u1ee5 (SaaS), m\u1ed9t minh ch\u1ee9ng cho ki\u1ebfn th\u1ee9c s\u00e2u r\u1ed9ng c\u1ee7a \u00f4ng v\u1ec1 c\u00e1c gi\u1ea3i ph\u00e1p k\u1ef9 thu\u1eadt s\u1ed1.","sameAs":["https:\/\/www.linkedin.com\/in\/siim-tiigimagi\/"]},{"@type":"Question","@id":"https:\/\/pageloot.com\/blog\/qr-code-usability-best-practices\/#faq-question-5b6c8823f26f","position":1,"url":"https:\/\/pageloot.com\/blog\/qr-code-usability-best-practices\/#faq-question-5b6c8823f26f","name":"K\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb cho m\u00e3 QR in l\u00e0 bao nhi\u00eau?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"For close-range materials like business cards, the minimum size is 0.8 x 0.8 inches (2 x 2 cm). If the code contains high data density or is intended for distant scanning, follow the 10:1 ratio where the code width is one-tenth of the scanning distance.    Why do scanners sometimes fail to read colorful QR codes? Scanners struggle when there is insufficient contrast between the modules and the background. To ensure reliability, maintain at least a 4.5:1 contrast ratio and always use a dark foreground on a light background. Avoid light grays, yellows, or pastels for the modules.    What are the benefits of using dynamic QR codes for usability? Dynamic codes allow you to edit the destination URL without reprinting the physical code. They also use a short URL to keep the module pattern simple and u005cu0022airy,u005cu0022 which makes the code much easier for a QR code scanner to read quickly.","inLanguage":"vi"},"inLanguage":"vi"}]}},"_links":{"self":[{"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts\/48090","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/users\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/comments?post=48090"}],"version-history":[{"count":4,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts\/48090\/revisions"}],"predecessor-version":[{"id":52756,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts\/48090\/revisions\/52756"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/media\/50312"}],"wp:attachment":[{"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/media?parent=48090"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/categories?post=48090"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/tags?post=48090"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}