What is e-Aadhaar ? keyboard_arrow_down e-Aadhaar is a password protected electronic copy of Aadhaar , digitally signed by UIDAI. To open the e -Aadhaar PDF file, it is imperative to enter the e -Aadhaar card password . The Aadhaar card password safeguards the downloaded digital e -Aadhaar card. The Aadhaar card open password combines the first 4 letters of your name in capital and your birth year. The downloaded e-Aadhaar card comes in the form of a PDF file and is password protected. This password -protected Aadhaar card ensures high-grade security as individuals need to open this file with the given Aadhaar PDF password . The above-mentioned brief discussion answers the question as to what the password to open an e-Aadhaar is. The password to this e -Aadhaar PDF file/Aadhar card download password is of 8 characters. This 8 character password is a combination of the first four letters of your name written in CAPITAL (name as mentioned in the Aadhaar card) and your Year of Birth (in YYYY format).