Your customers need an ecratum account to read through your Knowledge Base. When you share the link of your Knowledge Base, your customers will have a Log In/Sign Up View when the link is clicked. If they are already using ecratum, they just need to log in and can start reading through your Knowledge Base. If they do not have an ecratum account yet, they can create an ecratum account for free and then can have the access to view your Knowledge Base.