725 ILCS 167/17
A law enforcement agency operating a drone under this Act is prohibited from using, during a flight, onboard facial recognition software that works in conjunction with the drone. A law enforcement agency operating a drone under this Act is prohibited from using any information gathered by a drone with any facial recognition software, unless either (i) the law enforcement agency is using a drone to counter a high risk of a terrorist attack by a specific individual or organization and the United States Secretary of Homeland Security has determined that credible intelligence indicates that there is such a risk or (ii) the law enforcement agency possesses reasonable suspicion that, under particular circumstances, swift action is needed to prevent imminent harm to life or to forestall the imminent escape of a suspect or the destruction of evidence.
725 ILCS 167/17