Biometric Aadhaar authentication centres notified for GST registration, enabling in-person ID, photograph and document verification. Notification under the proviso to sub-rule (4A) of rule 8 of the West Bengal GST Rules, 2017 designates named Facilitation Centres (GSK-1 to GSK-32) and their addresses as official points for biometric Aadhaar authentication, capture of applicant photographs and physical verification of original documents submitted with GST registration applications, linking each centre to applicants in the specified jurisdictional areas; the notification is effective immediately.