240 ILCS 5/2
No person, except as hereinafter provided, shall engage in the business of renting or permitting the use of for compensation, safety deposit boxes, safes, vaults or other facilities for the safekeeping of personal property unless he has been issued a license to do so. The engaging in such business by any person without a license, current and unrevoked, issued pursuant to the provisions of this Act is declared to be inimical to the public welfare and public safety and to constitute a public nuisance. The Director, through the Attorney General or the State's Attorney of the county, may maintain an action in the name of the People of the State of Illinois to perpetually enjoin any person from so unlawfully engaging in such business. Such injunctive remedy shall be in addition to, and not in lieu of any penalty or remedy, civil or criminal, otherwise provided by law.
240 ILCS 5/2