Actually this has been wrecking my brain for quite long. Aadhar Numbers should be renewed/reissued with new set of numbers periodically. I know I know we shall have very large numbers But hey we can manage with with by using some Number compression technique This shall ensure minimization of fake adhaar cards. Having Ancestry registered with Adhaar shall stem addition of fake members at some point of time because population can grow but not your ancestors... I think a thread where we discuss how aadhar could be made more robust - should be created- given many are in tech and processes domain here.. who will do the honors?