Recently there have been numerous instances of Aadhaar data being exposed online by various agencies. Over 130 millions aadhaar data and bank account details leaked from the government website. According to aadhaar regulations sharing, circulating or publishing of aadhaar number is restricted. To enhance the security of Aadhaar numbers, UIDAI has introduced the “Aadhaar Data Vault". Aadhaar Data Vault is a centralized storage for all the Aadhaar numbers collected by the AUAs/KUAs/Sub-AUAs/ or any other agency for specific purposes. It is a secure system accessible only on a need to know basis. The Aadhaar data vault consists of reference key, which is a unique token to represent the Aadhaar number in the entire internal ecosystem of the agency. Mapping of reference key and Aadhaar number is to be maintained in the Aadhaar Data Vault. The primary objectives of aadhaar data vault are reducing the footprinting of aadhaar number, preventing 360 profiling of residents, ceasing the usage of aadhaar number as the domain-specific identifier. The course of action for implementation of aadhaar data vault is given below.