<h1>Biometric Aadhaar authentication now requires appointment-based in-person verification for certain GST registration applicants, enabling ARN issuance after checks.</h1> Amendment to Rule 8 allows identification via Biometric-based Aadhaar Authentication with applicant photograph and original-document verification using portal data analysis and risk parameters. After filing Form GST REG-01 applicants receive either an OTP-based authentication link or a link to book an appointment at a designated GST Suvidha Kendra for biometric authentication and in-person document verification; ARNs are generated after completion of these biometric and document checks.