Remember when you were told the SS number would never be used as ID, and you were never going to be required to use it. Just thinking back to the BS years... from the odfwstopo site. Oregon Department of Fish and Wildlife Online License Sales Social Security Number Requirement Q. Why do I have to give my social security number to buy a fishing or hunting license? A. Federal and state laws adopted in 1996 and 1997 require applicants for professional, driver, occupational and recreational hunting and fishing licenses to provide their social security number the first time they purchase a license to aid child support enforcement authorities. In 2001 the Oregon Legislature changed the law to allow greater flexibility for purchasers of hunting and fishing licenses.