Only when you link it while creating your account online.
My CA can see the tax returns just by knowing pan card and date of birth. dont exactly know from whereAadhaar is probably the only database open for authentication from private companies.
Income tax might be open to banks...
Maybe there is a format for driving license like voter Id card? My license is also pretty old... Even the original number would probably fail.cani add any random number, does not work with driver licence