SSN's were never meant to be used for identification purposes like they are used today. They were designed only to be able to make a SS benefit claim when you

SSN's were never meant to be used for identification purposes like they are used today. They were designed only to be able to make a SS benefit claim when you came of age to help prove you are entitled to the benefit. That's why they gave you a physical card. Combined with your other, regular identification (if requested), you can prove that you are the person you say you are and the benefits available to you have already been recorded. The SSN itself should never have been used in lieu of proper identification.