Expert Answer: Biometrics is not always required for an Employment Authorization Document (EAD) application. USCIS may waive biometrics for certain applicants, but if requested, you must attend the appointment. For a Social Security Number (SSN), biometrics is generally not required unless applying for specific immigration statuses that involve background checks. If USCIS schedules you for biometrics, you must comply to avoid delays in processing your application.