Enrolling for Aadhar is voluntary. Aadhaar is a tool that been designed for the delivery of service and not used for any other purpose. If you do not want to use your Aadhaar, it will turn into dormant, as the usage happens basis your physical attendance and biometric authentication. Nevertheless, kids, within 6 months of achieving a majority, can make an application for withdrawal of their Aadhaar as per the rules of the Aadhaar Act, 2016.