UIDIAI has made it easier to lock and unlock your Aadhaar number online through their official myAadhaar portal at myaadhaar.uidai.gov.in. In this article, you will get to know the following points on how to lock/unlock your Aadhaar number online, Let’s see each of these points in detail. What is Aadhaar (UID) Lock & Unlock? keyboard_arrow_down For an Aadhaar number holder, security and privacy of personal data is always a primary concern. To strengthen the security of his/her Aadhaar number and to provide control to the Aadhaar number holder, UIDAI provide a mechanism of locking and unlocking Aadhaar number (UID). Biometric Locking/Unlocking is a service that allows an Aadhaar holder to lock and temporarily unlock their biometrics. This facility aims to strengthen privacy and confidentiality of Aadhaar number holder's Biometrics Data. Can I unlock my Aadhaar biometric data offline? No, currently, it is not possible to unlock your Aadhar biometric data offline and it requires OTP (One-Time Password) authentication sent to your registered email or mobile number.