IL HB3667

Amends Illinois' Biometric Information Privacy Act (BIPA) to exclude from the definition of "biometric identifier" any information converted to a mathematical representation (such as a numeric string) that cannot be used to recreate the original biometric identifier

Creates exemptions for biometric data collection for "security purposes," defined as preventing theft, fraud, trespass, stalking, violence, or harassment, as well as assisting law enforcement investigations—allowing collection without written consent if data is retained only as long as reasonably necessary

Exempts biometric time clocks and biometric locks from the Act entirely when they convert biometric data to mathematical representations that cannot recreate the original identifier

Removes "electronic signature" from the definition of "written release," requiring only informed written consent or an employee release as a condition of employment

Adds exemptions for contractors working for federal agencies, entities with collective bargaining agreements addressing biometric policies, and alarm systems installed by licensed security professionals