{"id":43624,"date":"2024-02-26T12:15:22","date_gmt":"2024-02-26T11:15:22","guid":{"rendered":"https:\/\/www.viafirma.com\/?post_type=ayuda&#038;p=43624"},"modified":"2024-05-10T10:11:07","modified_gmt":"2024-05-10T08:11:07","slug":"sms-otp-signature","status":"publish","type":"ayuda","link":"https:\/\/www.viafirma.com\/en\/documentation\/sms-otp-signature\/","title":{"rendered":"SMS OTP signature"},"content":{"rendered":"<p>The SMS OTP signature is based on a one-time-password code, generated from the hash of the document to be signed, and sent to the signer&#8217;s cell phone via SMS. The verification code generated by Viafirma corresponds to a random algorithm for which the content of the document to be signed (hash) is used, being able to prove that this OTP code corresponds to a specific document and not to another one.<\/p>\n<p>An example configuration for this type of evidence could be:<\/p>\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" src=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2020\/05\/otp_sms_detail.png\" alt=\"\" \/><\/figure>\n<p>During the signing process, the signer will be shown as follows:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-43632 size-full\" src=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2024\/04\/signatur-page-OTPSMS.png\" alt=\"Signature via OTP SMS\" width=\"909\" height=\"667\" srcset=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2024\/04\/signatur-page-OTPSMS.png 909w, https:\/\/www.viafirma.com\/wp-content\/uploads\/2024\/04\/signatur-page-OTPSMS-300x220.png 300w, https:\/\/www.viafirma.com\/wp-content\/uploads\/2024\/04\/signatur-page-OTPSMS-768x564.png 768w\" sizes=\"auto, (max-width: 909px) 100vw, 909px\" \/><\/p>\n<figure class=\"wp-block-image aligncenter\"><\/figure>\n<p>This is the SMS you will receive to tell you the code to enter:<\/p>\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" src=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2020\/05\/otp_sms_mobiletext-300x237.png\" alt=\"\" \/><\/figure>\n<p>Once the signature has been made, the result will be as follows.<\/p>\n<p>Document where the evidence is shown:<\/p>\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" src=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2020\/05\/documento_firma_sms-1024x516.jpg\" alt=\"\" \/><\/figure>\n<p>Data collected during the signature and that can be seen from the document itself if in the evidence we activate the option &#8220;Add public link on the evidence&#8221;:<\/p>\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" src=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2020\/05\/enlace-publico-evidencia-1-260x300.png\" alt=\"\" \/><\/figure>\n<p>This information will be available at all times from the platform.<\/p>\n<p>As a summary and to see how the configuration would affect the signature process, let&#8217;s see the following image:<\/p>\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" src=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2020\/05\/otp_sms_sample_desc-768x574.png\" alt=\"\" \/><\/figure>\n<p><strong>LINK OF INTEREST:<\/strong><\/p>\n<p><a href=\"https:\/\/www.viafirma.com\/en\/faqs\/is-otp-sms-signature-legally-binding\/\" target=\"_blank\" rel=\"noreferrer noopener\">Legality of OTP SMS signature<\/a><\/p>\n<p>If you have any questions about the use of this information please contact us directly.<\/p>\n","protected":false},"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"default","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-4)","background-image":"","background-repeat":"repeat","background-position":"center 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