The UIDAI has released new guideline regarding children's Aadhaar card - Baal Aadhaar. UIDAI issues Baal Aadhaar Card to the children under 5 years of age. To differentiate it from normal Aadhaar, the authority issues blue coloured Aadhaar cards for them. The authority has issued mandatory guidelines to update biometric information in Aadhaar data for children attaining age of 5 and 15 years.