How can I get the visitor Telephone number?
Or a special number each visitor has a different one, But I'm not talking about the IP, Isn't there any other way?

Store the session id, or other uniquely assigned number, in a cookie.

It does not work I want to know every user's computer number... in my country there are many computers have the same IP.... Slove it!

Session ID should be a unique hash for every session. If that is stored as a cookie with no expiration on the visitors machine it should suffice.

(demanding "Solve it!" is just plain rude as well and may leave you solving your own problems without help)

commented: He said "slove it", that's not rude :) +11