Dear Taruna,
I understand that everything covered by you can verify a person's identity but now a days everything is available in duplicate or may be fraud.
There was a website available some time back on the net for fake degrees and the site name was
www.fakedegrees.com, now a days it is not more available but this is the only site has come in picture. There can be some more which we are not aware about.
If a person has worked with 3 or more organization, are you doing reference check (background investigation) with all the organization???
There will be cases where people say that the particular industry has been closed down and because of the same he / she changed the job.
Now specially with the smaller industry which is not much known how to cross check that was there any existing industry with such name?
These are some of the question and lot more........
Regards
Chirag Jain