ISP's interpretation? Nope, it's not an interpretation, it's the statute. If you'd bothered to look up the FOID statute you would have read that what you posted is quoted from 430 ILCS 65/1. Here's the statute. Look familar?The Ill State Police interpretation of the law states...
"(430 ILCS 65/1) (from Ch. 38, par. 83‑1)
Sec. 1. It is hereby declared as a matter of legislative determination that in order to promote and protect the health, safety and welfare of the public, it is necessary and in the public interest to provide a system of identifying persons who are not qualified to acquire or possess firearms, firearm ammunition, stun guns, and tasers within the State of Illinois by the establishment of a system of Firearm Owner's Identification Cards, thereby establishing a practical and workable system by which law enforcement authorities will be afforded an opportunity to identify those persons who are prohibited by Section 24‑3.1 of the "Criminal Code of 1961", as amended, from acquiring or possessing firearms and firearm ammunition and who are prohibited by this Act from acquiring stun guns and tasers. "