If you did not get you Aadhaar card via post and you need that immediately, you can get it from the web too following the link https://uidai.gov.in/. After downloading the pdf file of e-Aadhaar, it needs a password to open.
Now many people do know what the password is?
We are going to give the information on the password.
The password is the first four letters of your name and your year of birth. For example, if your name is Ashok Gupta and your date of birth is 1979, your password will be ASHO1979. Sometimes, it can be the area pincode too.