Identity management

This is one idea to watch, Today in the current world, have many identifications, Each one to knows us in different ways in which we interact with the system. We keep on adding more and more profiles depending on our uses to various online systems. With age catching up we start to forget the passwords and then keep modify them again and again. This is the problem statement I have in mind, I need to think of a solution to solve this growing password mess which we are creating.