Do you know of any such automated systems or are you just making that up? I've never heard of application systems or ATS that looks for a linkedin URL in PDFs,

Do you know of any such automated systems or are you just making that up? I've never heard of application systems or ATS that looks for a linkedin URL in PDFs, extracts it along with employment information and validates it against what's in the resume, or a form that validates that a given entry leads to a valid LinkedIn profile, and that the profile corresponds to the one that was submitted. Recruiters; yes, and those will show up - and they haven't.