Only allow authorised individual to unlock the PDF using biometrics like fingerprint and iris for authentication to prevent hacking attempts by third parties without the consent of the owner. Lock screen after minutes of inactivity and unlock using fingerprint or voiceprint or iris for security purposes. To clear clipboard history after the session and to disable forwarding of documents via chat apps without consent of the owner. Use Artificial intelligence to detect forgery of signature and fingerprint. Have a chatbot to address customer queries.