When your buyer receives your email or InMail, they'll be able to click the unique link to access your Smart Link. If they're logged into LinkedIn, they'll be prompted with a welcome screen, where they'll click Agree and View to enter. If the viewer isn't logged into LinkedIn, they will be prompted to do so, or asked to provide their first name, last name, and email address.
The buyer's Smart Link view is what you see when you preview a link. All users have to self-identify before viewing the link, which means you will always know who your viewers are when you look at Smart Link analytics later.