How to open a password-protected Aadhaar card PDF?

To open a password-protected Aadhaar card PDF, you must enter an eight-character password. This password is a combination of the first four letters of your name as printed on the Aadhaar card in capital letters, followed by your year of birth in YYYY format. For example, if your name is ANISH KUMAR and your year of birth is 1989, your password will be ANIS1989. Ensure there are no spaces or special characters between the name and the year.