In the 'My Card' feature of Zoop Wallet, masking refers to hiding the sensitive information on your Aadhar Number and Pan Card Number displayed on the Home screen for privacy and security. If the document is imported from DigiLocker, the masking will be automatically applied from DigiLocker's end. For documents stored via Scan or Gallery, the numbers will also be masked by default. However, to unmask the numbers, you will initially need to enter the full Aadhar or Pan number before revealing the details. Unmasking allows you to view the full Aadhar and Pan card numbers using your dedicated PIN, ensuring secure access whenever needed.