Absolutely. A single Aadhaar VID can be used at multiple places, or a new one can be generated for each use case. The choice purely lies with the Aadhaar number holder.
Aadhaar VIDs are temporary 16-digit numbers that can be generated by Aadhaar number holders. The current minimum validity of an Aadhaar VID is 1 day. So, you can create a new Aadhaar VID every day after 00.00 hrs.
No, currently Aadhaar VIDs can only be generated from the UIDAI portal through an OTP key. Hence, it’s mandatory to link your phone number to your Aadhaar number at the moment.