For a resident, 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 resident, UIDAI provide a mechanism of locking and unlocking Aadhaar number (UID).
Resident can lock his or her Aadhaar (UID) via UIDAI website (www.myaadhaar.uidai.gov.in) or through mAadhaar app.
By doing this Resident cannot perform any sort of Authentication using UID, UID Token & VID for Biometrics, Demographic & OTP modality
If resident wants to unlock UID he/she can do so by using latest VID, through UIDAI website or mAadhaar app.
After unlocking Aadhaar (UID), resident can perform authentication using UID, UID Token & VID.