Question: what is 16 digit virtual id?
Answer: The VID is a temporary, revocable 16-digit random number mapped with the Aadhaar number. The UIDAI, in a statement issued in January, said that one's Aadhaar number cannot be derived from the VID that is generated. The virtual ID can be used for the purpose of authentication in the same way the Aadhaar number is used.