1.0GLC - Biuro rachunkowehttps://glc.pl/en/User authentication in the KSeF system - GLC - Biuro rachunkowerich600338<blockquote class="wp-embedded-content" data-secret="27N5lgq8G1"><a href="https://glc.pl/en/blog/user-authentication-in-the-ksef-system/">User authentication in the KSeF system</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://glc.pl/en/blog/user-authentication-in-the-ksef-system/embed/#?secret=27N5lgq8G1" width="600" height="338" title="“User authentication in the KSeF system” — GLC - Biuro rachunkowe" data-secret="27N5lgq8G1" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script>
/*! This file is auto-generated */
!function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document);
//# sourceURL=https://glc.pl/wp-includes/js/wp-embed.min.js
</script>
https://glc.pl/cnt/upld/2025/10/hero-authentication.jpg19201080To use the National e-Invoicing System (KSeF), it is not necessary to create an account within the system. However, identity verification and confirmation of permissions are required. The authentication process ensures that access to the system is granted only to verified individuals, eliminating anonymity.