The Unique Identification Authority of India (UIDAI) has warned the people not to share photocopies of Aadhaar with any organisations citing its misuse.
The authority has suggested the use of masked Aadhaar which displays only the last 4 digits of your Aadhaar number that can be downloaded from UIDAI's official website https://myaadhaar.uidai.gov.in.
The existence of any Aadhaar number can be verified at https://myaadhaar.uidai.gov.in/ verifyAadhaar.
To verify offline, you can scan the QR code on eAadhaar or Aadhaar letter or Aadhaar PVC card using a QR code scanner in the mAadhaar mobile application, informed UIDAI.