What is Aadhaar/Adhar Card ? Aadhaar Card, also misspelled as Adhar Card or Aadhar Card or Adhaar Card, is a 12 digit unique identification number issued by India government to every individual resident of India based on their bio-metric or demographic data. Aadhaar is a Hindi word and has a meaning of 'Foundation' or 'Base'. The Unique Identification Authority of India(UIDAI) which works under the Planning Commission of India, is responsible for managing Aadhaar cards/letters. However the journey of Aadhaar was started on February 7, 2012 when UIDAI launched an online verification system for Aadhaar numbers. The system enables banks, telecom companies and all governmental departments to verify if a person is a resident of India or not just by entering a unique identification number. After that, on November 26, 2012 Prime Minister Manmohan Singh launched a direct Aadhaar-linked benefit transfer scheme by directly transferring money to the residents' bank account.