Another post-Sept. 11 security change was Homeland Security Presidential Directive 12 (HSPD 12). This directive created a standard form of identification to gain access to government facilities and mandated adoption of this standard by all government agencies. This Website provides more information on HSPD 12. Though the directive is directed at government agencies, like HSPD 3, the private sector can take some cues from it to enhance its security.