{"id":1773,"date":"2023-09-22T17:12:00","date_gmt":"2023-09-22T10:12:00","guid":{"rendered":"https:\/\/1gate.monamedia.net\/rfid-la-gi-huong-dan-cho-nguoi-moi-bat-dau\/"},"modified":"2025-07-12T15:25:04","modified_gmt":"2025-07-12T08:25:04","slug":"what-is-rfid-how-it-works","status":"publish","type":"post","link":"https:\/\/1gate.com.vn\/en\/what-is-rfid-how-it-works\/","title":{"rendered":"What is RFID? How it works and its applications \u2013 A Beginner\u2019s Guide"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_55 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >N\u1ed9i Dung<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\" role=\"button\"><label for=\"item-6a1df19cdb2f0\" ><span class=\"\"><span style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" 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: #999;color:#999\" 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 aria-label=\"Toggle\" aria-label=\"item-6a1df19cdb2f0\"  type=\"checkbox\" id=\"item-6a1df19cdb2f0\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/1gate.com.vn\/en\/what-is-rfid-how-it-works\/#What_is_RFID\" title=\"What is RFID? \">What is RFID? <\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/1gate.com.vn\/en\/what-is-rfid-how-it-works\/#How_RFID_Works\" title=\"How RFID Works\">How RFID Works<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/1gate.com.vn\/en\/what-is-rfid-how-it-works\/#Types_of_RFID\" title=\"Types of RFID \">Types of RFID <\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/1gate.com.vn\/en\/what-is-rfid-how-it-works\/#LF-_Low_frequency\" title=\"LF- Low frequency\">LF- Low frequency<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/1gate.com.vn\/en\/what-is-rfid-how-it-works\/#HF-_High_frequency\" title=\"HF- High frequency\">HF- High frequency<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/1gate.com.vn\/en\/what-is-rfid-how-it-works\/#UHF-_Ultra_high_frequency\" title=\"UHF- Ultra high frequency\">UHF- Ultra high frequency<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/1gate.com.vn\/en\/what-is-rfid-how-it-works\/#There_are_two_types_of_UHF_RFID_Active_RFID_and_Passive_RFID\" title=\"There are two types of UHF RFID: Active RFID and Passive RFID\">There are two types of UHF RFID: Active RFID and Passive RFID<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/1gate.com.vn\/en\/what-is-rfid-how-it-works\/#Common_Applications_of_RFID\" title=\"Common Applications of RFID\">Common Applications of RFID<\/a><\/li><\/ul><\/nav><\/div>\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_RFID\"><\/span><strong>What is RFID?<\/strong><br><p data-start=\"157\" data-end=\"467\"><\/p><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>Definition<\/strong>: RFID stands for Radio Frequency Identification. It is a technology that enables remote identification using radio waves, allowing data stored on a chip to be read contactlessly via radio frequency transmission at distances ranging from 50 cm to 10 meters, depending on the type of RFID tag.<br><\/p>\n\n\n\n<div style=\"height:12px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_RFID_Works\"><\/span><strong>How RFID Works<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>RFID uses non-contact radio wave technology to transmit data. By attaching RFID tags to assets or goods, users can uniquely and automatically identify those items\u2014enabling asset tracking and real-time inventory updates. RFID has taken automatic identification (Auto ID) technology to the next level by allowing tags to be read without the need to align a scanner directly with the tag\u2019s surface. Depending on the type of RFID tag used, the read range can exceed 20 meters.<\/p>\n\n\n\n<p>RFID has come a long way since its first applications, which were used to identify friendly or enemy aircraft during World War II. Over time, the technology has continuously improved in terms of usability and cost-efficiency, which has enabled its widespread adoption across various industries and areas of daily life.<\/p>\n\n\n\n<div style=\"height:12px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Types_of_RFID\"><\/span><strong>Types of RFID<\/strong><br><p data-start=\"1312\" data-end=\"1376\"><\/p><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>There are three main frequency ranges used in RFID transmission:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Low Frequency (LF):<\/strong> 125\u2013134 kHz<\/li>\n\n\n\n<li><strong>High Frequency (HF):<\/strong> 13.56 MHz<\/li>\n\n\n\n<li><strong>Ultra High Frequency (UHF):<\/strong> 433 MHz and 860\u2013960 MHz<\/li>\n<\/ul>\n\n\n\n<div style=\"height:12px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"LF-_Low_frequency\"><\/span><strong>LF- Low frequency<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>LF tags have longer wavelengths and can penetrate thin layers of metal. LF systems are ideal for reading objects with high water content, such as fruits or beverages. However, the read range is limited to just a few centimeters or inches. LF RFID tags are commonly used in access control and animal tagging.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"909\" height=\"227\" src=\"http:\/\/1gate.monamedia.net\/wp-content\/uploads\/2023\/11\/RFID-la\u0300-gi-5.webp\" alt=\"\" class=\"wp-image-1238\" srcset=\"https:\/\/1gate.com.vn\/wp-content\/uploads\/2023\/11\/RFID-la\u0300-gi-5.webp 909w, https:\/\/1gate.com.vn\/wp-content\/uploads\/2023\/11\/RFID-la\u0300-gi-5-300x75.webp 300w, https:\/\/1gate.com.vn\/wp-content\/uploads\/2023\/11\/RFID-la\u0300-gi-5-768x192.webp 768w, https:\/\/1gate.com.vn\/wp-content\/uploads\/2023\/11\/RFID-la\u0300-gi-5-400x100.webp 400w, https:\/\/1gate.com.vn\/wp-content\/uploads\/2023\/11\/RFID-la\u0300-gi-5-600x150.webp 600w\" sizes=\"(max-width: 909px) 100vw, 909px\" \/><\/figure>\n\n\n\n<div style=\"height:12px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"HF-_High_frequency\"><\/span><strong>HF- High frequency<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>HF tags work relatively well around metal surfaces and goods with moderate to high water content. Typical HF RFID systems have a maximum read range of about 1 meter. HF tags are widely used in library management, patient flow tracking, and check-in systems.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"909\" height=\"227\" src=\"http:\/\/1gate.monamedia.net\/wp-content\/uploads\/2023\/11\/RFID-la-gi-6.webp\" alt=\"\" class=\"wp-image-1239\" srcset=\"https:\/\/1gate.com.vn\/wp-content\/uploads\/2023\/11\/RFID-la-gi-6.webp 909w, https:\/\/1gate.com.vn\/wp-content\/uploads\/2023\/11\/RFID-la-gi-6-300x75.webp 300w, https:\/\/1gate.com.vn\/wp-content\/uploads\/2023\/11\/RFID-la-gi-6-768x192.webp 768w, https:\/\/1gate.com.vn\/wp-content\/uploads\/2023\/11\/RFID-la-gi-6-400x100.webp 400w, https:\/\/1gate.com.vn\/wp-content\/uploads\/2023\/11\/RFID-la-gi-6-600x150.webp 600w\" sizes=\"(max-width: 909px) 100vw, 909px\" \/><\/figure>\n\n\n\n<div style=\"height:12px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"UHF-_Ultra_high_frequency\"><\/span><strong>UHF- Ultra high frequency<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>UHF tags offer significantly longer read ranges (from 30 meters up to over 100 meters) and faster data transmission speeds\u2014meaning they can read more tags per second compared to LF and HF tags. However, because UHF radio waves have shorter wavelengths, their signals are more susceptible to interference and cannot pass through metal or water.<\/p>\n\n\n\n<p>Due to their high data transmission rates, <strong>UHF RFID<\/strong> is used in a wide range of applications, such as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Automatically recording the movement of goods through warehouse control gates<\/li>\n\n\n\n<li>Tracking race performance at finish lines in sporting events<\/li>\n\n\n\n<li><strong>Electronic toll collection<\/strong><\/li>\n\n\n\n<li><strong>Parking access control<\/strong> systems<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"909\" height=\"227\" src=\"http:\/\/1gate.monamedia.net\/wp-content\/uploads\/2023\/11\/RFID-la-gi-7.webp\" alt=\"\" class=\"wp-image-1240\" srcset=\"https:\/\/1gate.com.vn\/wp-content\/uploads\/2023\/11\/RFID-la-gi-7.webp 909w, https:\/\/1gate.com.vn\/wp-content\/uploads\/2023\/11\/RFID-la-gi-7-300x75.webp 300w, https:\/\/1gate.com.vn\/wp-content\/uploads\/2023\/11\/RFID-la-gi-7-768x192.webp 768w, https:\/\/1gate.com.vn\/wp-content\/uploads\/2023\/11\/RFID-la-gi-7-400x100.webp 400w, https:\/\/1gate.com.vn\/wp-content\/uploads\/2023\/11\/RFID-la-gi-7-600x150.webp 600w\" sizes=\"(max-width: 909px) 100vw, 909px\" \/><\/figure>\n\n\n\n<div style=\"height:12px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"There_are_two_types_of_UHF_RFID_Active_RFID_and_Passive_RFID\"><\/span><strong>There are two types of UHF RFID: Active RFID and Passive RFID<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div style=\"height:12px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table><tbody><tr><td><strong>Ti\u00eau ch\u00ed<\/strong><\/td><td><strong>Active RFID<\/strong><\/td><td><strong>Passive RFID<\/strong><\/td><\/tr><tr><td>Definition<\/td><td>Active RFID tags have their own power source and continuously transmit signals to readers.<\/td><td>Passive RFID tags do not have an internal power source; they receive energy from the reader and use it to send back data.<\/td><\/tr><tr><td>Frequency Bands<\/td><td>433 MHz<\/td><td>860- 960 MHz<\/td><\/tr><tr><td>Read range<\/td><td>30- 100 m <\/td><td>25m (ti\u1ebfp x\u00fac g\u1ea7n)<\/td><\/tr><tr><td>Battery<\/td><td>C\u00f3<\/td><td>Kh\u00f4ng<\/td><\/tr><tr><td>Power source<\/td><td>Built into the tag<\/td><td>Supplied by the reader<\/td><\/tr><tr><td>Operation<\/td><td>Continuous tracking<\/td><td>Only activated and read upon reader request<\/td><\/tr><tr><td>Lifespan<\/td><td>Limited by battery (typically 3\u20135 years)<\/td><td>Unlimited<\/td><\/tr><tr><td>Advantages<\/td><td>Very long read range, lower infrastructure costs than passive systems, large memory capacity, high data transmission speed.<\/td><td>Low cost per tag, long read range, available in many shapes and sizes, globally standardized, high data transmission speed.<\/td><\/tr><tr><td>Disadvantages<\/td><td>Higher cost per tag, larger size, shipping limitations (due to battery), signal interference from metal and liquids, subject to certain EU regulations.<\/td><td>Higher cost for readers, moderate memory capacity, susceptible to interference from metal and liquids.<\/td><\/tr><tr><td>Applications<\/td><td>Due to higher costs, often used for high-value assets (e.g., pipelines, cargo containers, machinery).<\/td><td>Low-cost and flexible, widely used in inventory, asset management, livestock tracking, event timing, and event management.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common_Applications_of_RFID\"><\/span><strong>Common Applications of RFID<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div style=\"height:12px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>RFID technology is increasingly being adopted across various industries due to its benefits in terms of data accuracy, labor efficiency, operational cost reduction, and time savings. Some typical applications include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Timing for sports competitions<\/li>\n\n\n\n<li>Asset management<\/li>\n\n\n\n<li>Pharmaceutical tracking<\/li>\n\n\n\n<li>Inventory tracking<\/li>\n\n\n\n<li>Laundry and textile management<\/li>\n\n\n\n<li>Library lending and return systems<\/li>\n\n\n\n<li>Toll collection<\/li>\n\n\n\n<li>Infant tracking in hospitals<\/li>\n\n\n\n<li>Asset tracking in jewelry stores<\/li>\n\n\n\n<li>Logistics and supply management<\/li>\n\n\n\n<li>Contactless automated payments<\/li>\n\n\n\n<li>Event attendee management<\/li>\n\n\n\n<li>Security control and access management<\/li>\n<\/ul>\n\n\n\n<p>Explore detailed RFID solutions across various industries provided by 1Gate <a href=\"https:\/\/1gate.com.vn\/en\/rfid-solutions\/\" target=\"_blank\" rel=\"noreferrer noopener\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">here<\/mark><\/a><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is RFID? Definition: RFID stands for Radio Frequency Identification. It is a technology that enables remote identification using radio waves, allowing data stored on a chip to be read contactlessly via radio frequency transmission at distances ranging from 50 cm to 10 meters, depending on the type of RFID tag. How RFID Works RFID [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":1677,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[24],"tags":[],"class_list":["post-1773","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kien-thuc-en"],"acf":[],"_links":{"self":[{"href":"https:\/\/1gate.com.vn\/en\/wp-json\/wp\/v2\/posts\/1773"}],"collection":[{"href":"https:\/\/1gate.com.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/1gate.com.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/1gate.com.vn\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/1gate.com.vn\/en\/wp-json\/wp\/v2\/comments?post=1773"}],"version-history":[{"count":1,"href":"https:\/\/1gate.com.vn\/en\/wp-json\/wp\/v2\/posts\/1773\/revisions"}],"predecessor-version":[{"id":2503,"href":"https:\/\/1gate.com.vn\/en\/wp-json\/wp\/v2\/posts\/1773\/revisions\/2503"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/1gate.com.vn\/en\/wp-json\/wp\/v2\/media\/1677"}],"wp:attachment":[{"href":"https:\/\/1gate.com.vn\/en\/wp-json\/wp\/v2\/media?parent=1773"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/1gate.com.vn\/en\/wp-json\/wp\/v2\/categories?post=1773"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/1gate.com.vn\/en\/wp-json\/wp\/v2\/tags?post=1773"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}