Aadhar card Update: If you are a resident of India you must have an Aadhar card issued by the Unique Identification Authority of India (UIDAI). The Aadhar card is a 12-digit unique identification number for Indian residents. The unique card not only serves as proof of identity and address it also enables access to government services subsidies and financial transactions. It must be known to our readers that Aadhar card holders can request for changes in the basic details of their card but would you believe if we tell you that there is a single information in your Aadhaar card that can only be updated once in your lifetime. Changes allowed in Aadhar card According to the rules of Unique Identification Authority of India (UIDAI) an Aadhaar card holder is allowed to change the name on his/her Aadhaar card only twice in his/her lifetime. Readers can note that girls often change their surname after marriage using the same rule. Also an Aadhaar card holder can update or modify his/her date of birth only once in your life. Most interestingly the Unique Identification Authority of India also gives the card holders permission to change the gender (female or male) in the Aadhaar card. However like DOB it is allowed only once in a lifetime. Readers should also note that there is no limit for updating the address in Aadhaar and therefore unlimited Address details can be updated. What is an Aadhaar Card? Aadhaar is a biometric-based ID system collecting demographic (name address date of birth) and biometric (fingerprints iris scans) data. It’s used for authentication in banking mobile connections and government schemes. Available in physical and digital (e-Aadhaar) formats. About UIDAI The Unique Identification Authority of India (UIDAI) established under the Aadhaar Act 2016 operates under the Ministry of Electronics and Information Technology. Types of Aadhaar Card •  Regular Aadhaar: Full Aadhaar number. •  Masked Aadhaar: Shows last four digits for privacy. (With inputs from agencies)