{"id":4402,"date":"2026-01-28T11:11:17","date_gmt":"2026-01-28T03:11:17","guid":{"rendered":"https:\/\/rfid-pro.com\/?p=4402"},"modified":"2026-01-30T16:35:35","modified_gmt":"2026-01-30T08:35:35","slug":"virtual-com-port-vs-hid-rfid-reader","status":"publish","type":"post","link":"https:\/\/rfid-pro.com\/pt\/virtual-com-port-vs-hid-rfid-reader\/","title":{"rendered":"Porta COM virtual vs Leitor RFID HID: Qual \u00e9 a diferen\u00e7a?"},"content":{"rendered":"<p data-start=\"408\" data-end=\"582\">Ao escolher um leitor RFID para o seu projeto, uma das decis\u00f5es mais negligenciadas, mas cr\u00edticas, \u00e9 <strong data-start=\"508\" data-end=\"530\">modo de comunica\u00e7\u00e3o<\/strong>. A maioria dos leitores RFID USB funciona num de dois modos:<\/p>\n<ul>\n<li data-start=\"586\" data-end=\"622\"><strong data-start=\"586\" data-end=\"622\">Porta COM virtual (VCP \/ USB CDC)<\/strong><\/li>\n<li data-start=\"625\" data-end=\"657\"><strong data-start=\"625\" data-end=\"657\">HID (Dispositivo de Interface Humana)<\/strong><\/li>\n<\/ul>\n<p data-start=\"659\" data-end=\"834\">Embora o hardware possa parecer id\u00eantico, o modo de comunica\u00e7\u00e3o afecta fundamentalmente <strong data-start=\"746\" data-end=\"833\">integra\u00e7\u00e3o de software, compatibilidade de sistemas, controlo de dados e complexidade de implanta\u00e7\u00e3o<\/strong>.<\/p>\n<p data-start=\"836\" data-end=\"975\">Este artigo explica o <strong data-start=\"862\" data-end=\"933\">diferen\u00e7as t\u00e9cnicas, casos de utiliza\u00e7\u00e3o no mundo real e crit\u00e9rios de sele\u00e7\u00e3o<\/strong> para Porta COM Virtual vs leitores RFID HID.<\/p>\n<h2 data-start=\"982\" data-end=\"1027\">O que \u00e9 um leitor RFID de porta COM virtual?<\/h2>\n<p data-start=\"1029\" data-end=\"1184\">A <strong data-start=\"1031\" data-end=\"1057\">Porta COM virtual (VCP)<\/strong> O leitor RFID emula uma porta de s\u00e9rie tradicional (RS-232) atrav\u00e9s de USB utilizando o <strong data-start=\"1133\" data-end=\"1174\">USB CDC (Classe de Dispositivo de Comunica\u00e7\u00e3o)<\/strong> protocolo.<\/p>\n<h3 data-start=\"1186\" data-end=\"1202\">Como funciona<\/h3>\n<ul>\n<li data-start=\"1205\" data-end=\"1261\">O leitor aparece como <strong data-start=\"1227\" data-end=\"1255\">COM3, COM4, \/dev\/ttyUSBx<\/strong>, etc.<\/li>\n<li data-start=\"1264\" data-end=\"1306\">Os dados s\u00e3o transmitidos como <strong data-start=\"1287\" data-end=\"1306\">dados seriais brutos<\/strong><\/li>\n<li data-start=\"1309\" data-end=\"1372\">Requer um <strong data-start=\"1320\" data-end=\"1330\">condutor<\/strong> (Windows) ou suporte nativo (Linux\/macOS)<\/li>\n<\/ul>\n<h3 data-start=\"1374\" data-end=\"1395\">Fluxo de dados t\u00edpico<\/h3>\n<div class=\"contain-inline-size rounded-2xl corner-superellipse\/1.1 relative bg-token-sidebar-surface-primary\">\n<div class=\"sticky top-[calc(--spacing(9)+var(--header-height))] @w-xl\/main:top-9\">\n<div class=\"absolute end-0 bottom-0 flex h-9 items-center pe-2\">\n<div class=\"bg-token-bg-elevated-secondary text-token-text-secondary flex items-center gap-4 rounded-sm px-2 font-sans text-xs\"><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"whitespace-pre!\"><span class=\"hljs-variable\">RFID<\/span> <span class=\"hljs-variable\">Etiqueta<\/span> \u2192 <span class=\"hljs-variable\">Leitor<\/span> \u2192 <span class=\"hljs-variable\">USB<\/span> <span class=\"hljs-variable\">CDC<\/span> \u2192 <span class=\"hljs-variable\">COM<\/span> <span class=\"hljs-variable\">Porto<\/span> \u2192 <span class=\"hljs-built_in\">Candidatura<\/span><br \/>\n<\/code><\/div>\n<\/div>\n<h3 data-start=\"1458\" data-end=\"1481\">Carater\u00edsticas principais<\/h3>\n<ul>\n<li data-start=\"1484\" data-end=\"1517\">Controlo total sobre <strong data-start=\"1502\" data-end=\"1517\">formato dos dados<\/strong><\/li>\n<li data-start=\"1520\" data-end=\"1548\">Apoios <strong data-start=\"1529\" data-end=\"1548\">comandos personalizados<\/strong><\/li>\n<li data-start=\"1551\" data-end=\"1579\">Comunica\u00e7\u00e3o bidirecional<\/li>\n<li data-start=\"1582\" data-end=\"1627\">Ideal para <strong data-start=\"1592\" data-end=\"1627\">sistemas industriais e incorporados<\/strong><\/li>\n<\/ul>\n<h2 data-start=\"1634\" data-end=\"1667\">O que \u00e9 um leitor RFID HID?<\/h2>\n<p data-start=\"1669\" data-end=\"1778\">Um <strong data-start=\"1672\" data-end=\"1691\">Leitor HID RFID<\/strong> utiliza o <strong data-start=\"1701\" data-end=\"1731\">Dispositivo de interface humana USB<\/strong> o mesmo protocolo que os teclados e ratos.<\/p>\n<h3 data-start=\"1780\" data-end=\"1796\">Como funciona<\/h3>\n<ul>\n<li data-start=\"1799\" data-end=\"1845\">O SO reconhece o leitor como um <strong data-start=\"1833\" data-end=\"1845\">teclado<\/strong><\/li>\n<li data-start=\"1848\" data-end=\"1866\">N\u00e3o \u00e9 necess\u00e1rio condutor<\/li>\n<li data-start=\"1869\" data-end=\"1915\">O UID da etiqueta \u00e9 \u201cdigitado\u201d no campo de entrada ativo<\/li>\n<\/ul>\n<h3 data-start=\"1917\" data-end=\"1938\">Fluxo de dados t\u00edpico<\/h3>\n<div class=\"contain-inline-size rounded-2xl corner-superellipse\/1.1 relative bg-token-sidebar-surface-primary\">\n<div class=\"sticky top-[calc(--spacing(9)+var(--header-height))] @w-xl\/main:top-9\">\n<div class=\"absolute end-0 bottom-0 flex h-9 items-center pe-2\">\n<div class=\"bg-token-bg-elevated-secondary text-token-text-secondary flex items-center gap-4 rounded-sm px-2 font-sans text-xs\"><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"whitespace-pre!\">Etiqueta RFID \u2192 Leitor \u2192 USB HID \u2192 <span class=\"hljs-built_in\">Teclado<\/span> Entrada<br \/>\n<\/code><\/div>\n<\/div>\n<h3 data-start=\"1993\" data-end=\"2016\">Carater\u00edsticas principais<\/h3>\n<ul>\n<li data-start=\"2019\" data-end=\"2032\">Plug-and-play<\/li>\n<li data-start=\"2035\" data-end=\"2065\">N\u00e3o \u00e9 necess\u00e1rio desenvolver software<\/li>\n<li data-start=\"2068\" data-end=\"2093\">Transmiss\u00e3o de dados num s\u00f3 sentido<\/li>\n<li data-start=\"2096\" data-end=\"2129\">Configurabilidade extremamente limitada<\/li>\n<\/ul>\n<h2 data-start=\"2136\" data-end=\"2190\">Porta COM virtual vs HID: Compara\u00e7\u00e3o lado a lado<\/h2>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"2192\" data-end=\"2719\">\n<thead data-start=\"2192\" data-end=\"2252\">\n<tr data-start=\"2192\" data-end=\"2252\">\n<th data-start=\"2192\" data-end=\"2202\" data-col-size=\"sm\">Recurso<\/th>\n<th data-start=\"2202\" data-end=\"2233\" data-col-size=\"sm\">Leitor RFID de porta COM virtual<\/th>\n<th data-start=\"2233\" data-end=\"2252\" data-col-size=\"sm\">Leitor RFID HID<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"2310\" data-end=\"2719\">\n<tr data-start=\"2310\" data-end=\"2365\">\n<td data-start=\"2310\" data-end=\"2322\" data-col-size=\"sm\">Classe USB<\/td>\n<td data-col-size=\"sm\" data-start=\"2322\" data-end=\"2347\">CDC (Emula\u00e7\u00e3o de s\u00e9rie)<\/td>\n<td data-col-size=\"sm\" data-start=\"2347\" data-end=\"2365\">HID (teclado)<\/td>\n<\/tr>\n<tr data-start=\"2366\" data-end=\"2406\">\n<td data-start=\"2366\" data-end=\"2384\" data-col-size=\"sm\">Condutor necess\u00e1rio<\/td>\n<td data-col-size=\"sm\" data-start=\"2384\" data-end=\"2400\">Sim (Windows)<\/td>\n<td data-col-size=\"sm\" data-start=\"2400\" data-end=\"2406\">N\u00e3o<\/td>\n<\/tr>\n<tr data-start=\"2407\" data-end=\"2445\">\n<td data-start=\"2407\" data-end=\"2424\" data-col-size=\"sm\">Dire\u00e7\u00e3o dos dados<\/td>\n<td data-col-size=\"sm\" data-start=\"2424\" data-end=\"2434\">bidirecional<\/td>\n<td data-col-size=\"sm\" data-start=\"2434\" data-end=\"2445\">Unidirecional<\/td>\n<\/tr>\n<tr data-start=\"2446\" data-end=\"2493\">\n<td data-start=\"2446\" data-end=\"2464\" data-col-size=\"sm\">Comandos personalizados<\/td>\n<td data-col-size=\"sm\" data-start=\"2464\" data-end=\"2476\">Apoiado<\/td>\n<td data-col-size=\"sm\" data-start=\"2476\" data-end=\"2493\">N\u00e3o suportado<\/td>\n<\/tr>\n<tr data-start=\"2494\" data-end=\"2548\">\n<td data-start=\"2494\" data-end=\"2510\" data-col-size=\"sm\">Formato de sa\u00edda<\/td>\n<td data-col-size=\"sm\" data-start=\"2510\" data-end=\"2525\">Bruto \/ Personalizado<\/td>\n<td data-col-size=\"sm\" data-start=\"2525\" data-end=\"2548\">Teclas do teclado<\/td>\n<\/tr>\n<tr data-start=\"2549\" data-end=\"2589\">\n<td data-start=\"2549\" data-end=\"2569\" data-col-size=\"sm\">N\u00edvel de integra\u00e7\u00e3o<\/td>\n<td data-col-size=\"sm\" data-start=\"2569\" data-end=\"2580\">Avan\u00e7ado<\/td>\n<td data-col-size=\"sm\" data-start=\"2580\" data-end=\"2589\">B\u00e1sico<\/td>\n<\/tr>\n<tr data-start=\"2590\" data-end=\"2648\">\n<td data-start=\"2590\" data-end=\"2609\" data-col-size=\"sm\">Compatibilidade com o SO<\/td>\n<td data-col-size=\"sm\" data-start=\"2609\" data-end=\"2635\">Windows \/ Linux \/ macOS<\/td>\n<td data-col-size=\"sm\" data-start=\"2635\" data-end=\"2648\">Universal<\/td>\n<\/tr>\n<tr data-start=\"2649\" data-end=\"2719\">\n<td data-start=\"2649\" data-end=\"2660\" data-col-size=\"sm\">Melhor para<\/td>\n<td data-col-size=\"sm\" data-start=\"2660\" data-end=\"2691\">Industrial, IoT, sistemas ERP<\/td>\n<td data-col-size=\"sm\" data-start=\"2691\" data-end=\"2719\">Assiduidade, login de acesso<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<h2 data-start=\"2726\" data-end=\"2786\">Quando \u00e9 que deve escolher um leitor RFID de porta COM virtual?<\/h2>\n<p data-start=\"2788\" data-end=\"2873\">Escolha <strong data-start=\"2795\" data-end=\"2807\">Modo VCP<\/strong> se o seu projeto exigir <strong data-start=\"2833\" data-end=\"2872\">controlo, escalabilidade ou automatiza\u00e7\u00e3o<\/strong>.<\/p>\n<h3 data-start=\"2875\" data-end=\"2900\">Casos de utiliza\u00e7\u00e3o recomendados<\/h3>\n<ul>\n<li data-start=\"2903\" data-end=\"2930\">Integra\u00e7\u00e3o de middleware RFID<\/li>\n<li data-start=\"2933\" data-end=\"2956\">Sistemas ERP \/ WMS \/ MES<\/li>\n<li data-start=\"2959\" data-end=\"2985\">Sistemas de localiza\u00e7\u00e3o de gado<\/li>\n<li data-start=\"2988\" data-end=\"3014\">Leitores de invent\u00e1rio RFID UHF<\/li>\n<li data-start=\"3017\" data-end=\"3048\">Linux incorporado \/ PCs industriais<\/li>\n<li data-start=\"3051\" data-end=\"3072\">Necessidade de candidaturas:\n<ul>\n<li data-start=\"3077\" data-end=\"3096\">Comandos de leitura\/escrita<\/li>\n<li data-start=\"3101\" data-end=\"3120\">Acesso ao bloco de mem\u00f3ria<\/li>\n<li data-start=\"3125\" data-end=\"3143\">Manuseamento de etiquetas m\u00faltiplas<\/li>\n<li data-start=\"3148\" data-end=\"3173\">Valida\u00e7\u00e3o de CRC \/ soma de controlo<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3 data-start=\"3175\" data-end=\"3186\">Exemplo<\/h3>\n<p data-start=\"3187\" data-end=\"3301\">A <strong data-start=\"3189\" data-end=\"3208\">Leitor RFID UHF<\/strong> recolha de dados EPC + TID + RSSI de centenas de etiquetas por segundo <strong data-start=\"3275\" data-end=\"3291\">deve utilizar o VCP<\/strong>, n\u00e3o HID.<\/p>\n<h2 data-start=\"3308\" data-end=\"3356\">Quando \u00e9 que deve escolher um leitor RFID HID?<\/h2>\n<p data-start=\"3358\" data-end=\"3433\">Escolha <strong data-start=\"3365\" data-end=\"3377\">Modo HID<\/strong> se a sua prioridade \u00e9 <strong data-start=\"3398\" data-end=\"3432\">simplicidade e rapidez de implementa\u00e7\u00e3o<\/strong>.<\/p>\n<h3 data-start=\"3435\" data-end=\"3460\">Casos de utiliza\u00e7\u00e3o recomendados<\/h3>\n<ul>\n<li data-start=\"3463\" data-end=\"3490\">Sistemas de assiduidade dos trabalhadores<\/li>\n<li data-start=\"3493\" data-end=\"3514\">Controlo de acesso simples<\/li>\n<li data-start=\"3517\" data-end=\"3543\">Terminais de caixa da biblioteca<\/li>\n<li data-start=\"3546\" data-end=\"3566\">Registo de visitantes<\/li>\n<li data-start=\"3569\" data-end=\"3589\">Autentica\u00e7\u00e3o de in\u00edcio de sess\u00e3o<\/li>\n<\/ul>\n<h3 data-start=\"3591\" data-end=\"3602\">Exemplo<\/h3>\n<p data-start=\"3603\" data-end=\"3717\">Um <strong data-start=\"3606\" data-end=\"3638\">Leitor de cart\u00f5es LF 125kHz EM4100<\/strong> utilizado para introduzir n\u00fameros de identifica\u00e7\u00e3o no Excel funciona melhor no modo HID - n\u00e3o \u00e9 necess\u00e1rio software.<\/p>\n<h2 data-start=\"3724\" data-end=\"3768\">Considera\u00e7\u00f5es sobre desempenho e estabilidade<\/h2>\n<h3 data-start=\"3770\" data-end=\"3790\">Porta COM virtual<\/h3>\n<ul>\n<li data-start=\"3793\" data-end=\"3810\">Maior rendimento<\/li>\n<li data-start=\"3813\" data-end=\"3834\">Melhor tratamento de erros<\/li>\n<li data-start=\"3837\" data-end=\"3866\">Adequado para leituras cont\u00ednuas<\/li>\n<li data-start=\"3869\" data-end=\"3888\">Pode ser afetado por:\n<ul>\n<li data-start=\"3893\" data-end=\"3909\">Conflitos de condutores<\/li>\n<li data-start=\"3914\" data-end=\"3935\">Reatribui\u00e7\u00e3o da porta COM<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3 data-start=\"3937\" data-end=\"3944\">HID<\/h3>\n<ul>\n<li data-start=\"3947\" data-end=\"3963\">Extremamente est\u00e1vel<\/li>\n<li data-start=\"3966\" data-end=\"3986\">Sem depend\u00eancia do condutor<\/li>\n<li data-start=\"3989\" data-end=\"4002\">Velocidade limitada<\/li>\n<li data-start=\"4005\" data-end=\"4044\">Sem confirma\u00e7\u00e3o de leitura ou comunica\u00e7\u00e3o de erros<\/li>\n<\/ul>\n<h2 data-start=\"4051\" data-end=\"4080\">Seguran\u00e7a e controlo de dados<\/h2>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"4082\" data-end=\"4281\">\n<thead data-start=\"4082\" data-end=\"4104\">\n<tr data-start=\"4082\" data-end=\"4104\">\n<th data-start=\"4082\" data-end=\"4091\" data-col-size=\"sm\">Aspeto<\/th>\n<th data-start=\"4091\" data-end=\"4097\" data-col-size=\"sm\">VCP<\/th>\n<th data-start=\"4097\" data-end=\"4104\" data-col-size=\"sm\">HID<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"4122\" data-end=\"4281\">\n<tr data-start=\"4122\" data-end=\"4178\">\n<td data-start=\"4122\" data-end=\"4140\" data-col-size=\"sm\">Encripta\u00e7\u00e3o de dados<\/td>\n<td data-col-size=\"sm\" data-start=\"4140\" data-end=\"4162\">Poss\u00edvel (App-side)<\/td>\n<td data-col-size=\"sm\" data-start=\"4162\" data-end=\"4178\">N\u00e3o \u00e9 poss\u00edvel<\/td>\n<\/tr>\n<tr data-start=\"4179\" data-end=\"4211\">\n<td data-start=\"4179\" data-end=\"4199\" data-col-size=\"sm\">Ler a confirma\u00e7\u00e3o<\/td>\n<td data-start=\"4199\" data-end=\"4205\" data-col-size=\"sm\">Sim<\/td>\n<td data-start=\"4205\" data-end=\"4211\" data-col-size=\"sm\">N\u00e3o<\/td>\n<\/tr>\n<tr data-start=\"4212\" data-end=\"4243\">\n<td data-start=\"4212\" data-end=\"4231\" data-col-size=\"sm\">Opera\u00e7\u00f5es de escrita<\/td>\n<td data-col-size=\"sm\" data-start=\"4231\" data-end=\"4237\">Sim<\/td>\n<td data-col-size=\"sm\" data-start=\"4237\" data-end=\"4243\">N\u00e3o<\/td>\n<\/tr>\n<tr data-start=\"4244\" data-end=\"4281\">\n<td data-start=\"4244\" data-end=\"4255\" data-col-size=\"sm\">Apenas UID<\/td>\n<td data-start=\"4255\" data-end=\"4266\" data-col-size=\"sm\">Opcional<\/td>\n<td data-col-size=\"sm\" data-start=\"4266\" data-end=\"4281\">Normalmente Sim<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p data-start=\"4283\" data-end=\"4354\">Para <strong data-start=\"4287\" data-end=\"4315\">aplica\u00e7\u00f5es RFID seguras<\/strong>, o HID \u00e9 geralmente <strong data-start=\"4334\" data-end=\"4353\">n\u00e3o recomendado<\/strong>.<\/p>\n<h2 data-start=\"4361\" data-end=\"4414\">Qual o modo de leitor RFID preferido pelos fabricantes?<\/h2>\n<p data-start=\"4416\" data-end=\"4465\">A maioria <strong data-start=\"4421\" data-end=\"4456\">fabricantes profissionais de RFID<\/strong> fornecer:<\/p>\n<ul>\n<li data-start=\"4469\" data-end=\"4513\"><strong data-start=\"4469\" data-end=\"4490\">Leitores de modo duplo<\/strong> (HID + VCP comut\u00e1vel)<\/li>\n<li data-start=\"4516\" data-end=\"4534\">Configura\u00e7\u00e3o via:\n<ul>\n<li data-start=\"4539\" data-end=\"4547\">Comandos<\/li>\n<li data-start=\"4552\" data-end=\"4564\">Ferramentas de configura\u00e7\u00e3o<\/li>\n<li data-start=\"4569\" data-end=\"4588\">Combina\u00e7\u00f5es de bot\u00f5es<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p data-start=\"4590\" data-end=\"4662\">Os leitores de n\u00edvel empresarial s\u00e3o predefinidos para <strong data-start=\"4626\" data-end=\"4638\">Modo VCP<\/strong> para a integra\u00e7\u00e3o do sistema.<\/p>\n<h2 data-start=\"4669\" data-end=\"4693\">Lista de controlo da decis\u00e3o<\/h2>\n<p data-start=\"4695\" data-end=\"4735\">Escolha <strong data-start=\"4702\" data-end=\"4722\">Porta COM virtual<\/strong> se precisar:<\/p>\n<ul>\n<li data-start=\"4738\" data-end=\"4758\">Integra\u00e7\u00e3o de software<\/li>\n<li data-start=\"4761\" data-end=\"4781\">Comandos RFID personalizados<\/li>\n<li data-start=\"4784\" data-end=\"4799\">Elevadas taxas de leitura<\/li>\n<li data-start=\"4802\" data-end=\"4820\">Manuseamento de etiquetas m\u00faltiplas<\/li>\n<li data-start=\"4823\" data-end=\"4845\">Fiabilidade industrial<\/li>\n<\/ul>\n<p data-start=\"4847\" data-end=\"4874\">Escolha <strong data-start=\"4854\" data-end=\"4861\">HID<\/strong> se precisar:<\/p>\n<ul>\n<li data-start=\"4877\" data-end=\"4894\">Instala\u00e7\u00e3o zero<\/li>\n<li data-start=\"4897\" data-end=\"4911\">Sem desenvolvimento<\/li>\n<li data-start=\"4914\" data-end=\"4933\">Entrada semelhante a um teclado<\/li>\n<li data-start=\"4936\" data-end=\"4954\">Leitura simples do UID<\/li>\n<\/ul>\n<h2 data-start=\"4961\" data-end=\"4984\">Recomenda\u00e7\u00e3o final<\/h2>\n<p data-start=\"4986\" data-end=\"5071\"><strong data-start=\"4986\" data-end=\"5071\">Os leitores HID RFID s\u00e3o para pessoas.<br data-start=\"5020\" data-end=\"5023\" \/>Porta COM virtual Os leitores RFID s\u00e3o para sistemas.<\/strong><\/p>\n<p data-start=\"5073\" data-end=\"5274\">Se o seu projeto RFID \u00e9 <strong data-start=\"5097\" data-end=\"5137\">tempor\u00e1rio, simples ou de a\u00e7\u00e3o humana<\/strong>, o HID \u00e9 suficiente.<br data-start=\"5157\" data-end=\"5160\" \/>Se o seu projeto RFID \u00e9 <strong data-start=\"5184\" data-end=\"5228\">escal\u00e1vel, automatizado ou de n\u00edvel empresarial<\/strong>, Porta COM virtual \u00e9 a \u00fanica op\u00e7\u00e3o correta.<\/p>","protected":false},"excerpt":{"rendered":"<p>Ao escolher um leitor RFID para o seu projeto, uma das decis\u00f5es mais negligenciadas, mas cr\u00edticas, \u00e9 o modo de comunica\u00e7\u00e3o. A maioria dos leitores RFID USB funciona num de dois modos: Porta COM virtual (VCP \/ USB CDC) HID (Human Interface Device) Embora o hardware possa parecer id\u00eantico, o modo de comunica\u00e7\u00e3o afecta fundamentalmente a integra\u00e7\u00e3o do software, a compatibilidade do sistema, o controlo de dados, [...]<\/p>","protected":false},"author":1,"featured_media":4403,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[268],"tags":[339,342,340,341,338],"class_list":["post-4402","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-rfid-technologies","tag-hid-rfid-reader","tag-industrial-rfid-systems","tag-rfid-communication-protocols","tag-rfid-reader-comparison","tag-virtual-com-port"],"acf":[],"_links":{"self":[{"href":"https:\/\/rfid-pro.com\/pt\/wp-json\/wp\/v2\/posts\/4402","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rfid-pro.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rfid-pro.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rfid-pro.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/rfid-pro.com\/pt\/wp-json\/wp\/v2\/comments?post=4402"}],"version-history":[{"count":0,"href":"https:\/\/rfid-pro.com\/pt\/wp-json\/wp\/v2\/posts\/4402\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rfid-pro.com\/pt\/wp-json\/wp\/v2\/media\/4403"}],"wp:attachment":[{"href":"https:\/\/rfid-pro.com\/pt\/wp-json\/wp\/v2\/media?parent=4402"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rfid-pro.com\/pt\/wp-json\/wp\/v2\/categories?post=4402"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rfid-pro.com\/pt\/wp-json\/wp\/v2\/tags?post=4402"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}