{"id":496,"date":"2007-05-31T01:00:06","date_gmt":"2007-05-30T23:00:06","guid":{"rendered":"http:\/\/www.desmm.com\/?p=496"},"modified":"2007-05-31T01:00:06","modified_gmt":"2007-05-30T23:00:06","slug":"un-paio-di-captcha","status":"publish","type":"post","link":"https:\/\/www.desmm.com\/blog\/un-paio-di-captcha-496.html","title":{"rendered":"Un paio di Captcha"},"content":{"rendered":"<p>Oggi vi parlo di due sistemi criptamento anti-bot da utilizzare nei form, pi\u00f9 comunemente conosciuti come <strong>Captcha<\/strong>. Ve ne parlo prima di tutto perch\u00e8 arricano da due valide segnalazioni fatte da lettori di questo Blog, ve ne parlo anche perch\u00e8 si distinguono dalla massa.<\/p>\n<div class=\"splash\"><img src='http:\/\/www.desmm.com\/wp-content\/uploads\/captcha.jpg' alt='Captcha' \/><\/div>\n<p><!--more--><\/p>\n<p>Nel primo caso Rodomontano che mi pare essere anche l&#8217;autore dello script che vi sto per mostrare. Questo <strong>captcha<\/strong>, \u00e8 uno <strong>script Php<\/strong> pieno di opzioni, tra le quali troverete sicuramente la combinazione che vi aggrada di pi\u00f9&#8230; in pi\u00f9 vi \u00e8 anche un innovativo (o almeno io non ne avevo ancora visiti) <strong>captcha animato<\/strong>. Con testo scorrevole oscillante o con oggetti che gli passano sopra.<br \/>\n<em>link: <a href=\"http:\/\/rodomontano.altervista.org\/captcha.php\">http:\/\/rodomontano.altervista.org\/captcha.php<\/a><\/p>\n<p><\/em><\/p>\n<p>Quest&#8217;altro invece, segnalato da Daniele, propone un <strong>Captcha<\/strong> bello da vedere con tanto di testo audio, anche se a dire il vero non si capisce molto delle lettere o numeri dettati. <a href=\"http:\/\/recaptcha.net\/\">reCAPTCHA<\/a> \u00e8 stato recensito anche su <a href=\"http:\/\/punto-informatico.it\/p.aspx?id=2003870\">Punto-informatico<\/a>, del quale vi riporto un estratto per conoscerne altre caratteristiche:<\/p>\n<blockquote><p>Quando un utente incontra un sistema di identificazione <strong>reCAPTCHA<\/strong>, non deve fare altro che interpretare e trascrivere le due parole che lo compongono: se nel primo caso si tratta di un insieme di caratteri perfettamente noto al computer che lo presenta all&#8217;utente, e che quindi sar\u00e0 sfruttato per convalidare l&#8217;accesso da parte di un umano ai suoi servizi, nel secondo caso l&#8217;immagine proposta riguarda un testo sconosciuto.<\/p>\n<p>Il sistema dei ricercatori punta a raccogliere le &#8220;interpretazioni umane&#8221; del secondo vocabolo, formando un ventaglio di possibili soluzioni associate all&#8217;immagine presentata da <strong>reCAPTCHA<\/strong>: quando un buon numero di utenti avr\u00e0 fornito una risposta coerente, a quell&#8217;immagine verr\u00e0 definitivamente associata una interpretazione. In questo modo potranno essere &#8220;interpretate&#8221; le scansioni dei circa 12mila volumi che ogni mese Internet Archive digitalizza, che potranno cos\u00ec essere conservate in forma testuale: una soluzione molto meno ingombrante delle immagini a cui il progetto si \u00e8 dovuto limitare fino ad oggi.<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Oggi vi parlo di due sistemi criptamento anti-bot da utilizzare nei form, pi\u00f9 comunemente conosciuti come Captcha. Ve ne parlo prima di tutto perch\u00e8 arricano da due valide segnalazioni fatte da lettori di questo Blog, ve ne parlo anche perch\u00e8 si distinguono dalla massa.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[1],"tags":[186],"class_list":["post-496","post","type-post","status-publish","format-standard","hentry","category-archivio","tag-php"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Un paio di Captcha &#8212; Design Multimedia<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.desmm.com\/blog\/un-paio-di-captcha-496.html\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Un paio di Captcha &#8212; Design Multimedia\" \/>\n<meta property=\"og:description\" content=\"Oggi vi parlo di due sistemi criptamento anti-bot da utilizzare nei form, pi\u00f9 comunemente conosciuti come Captcha. 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