The CityKey is a free optional government-issued ID card available to all Chicagoans regardless of age, gender, immigration status, or housing status. It serves as a government-issued ID, a Chicago Public Library Card, a Chicago Transit Authority Ventra Card, and a Chicago Rx prescription drug discount card. CityKey holders are also eligible for the many discounts and benefits offered by participating CityKey business partners across the city. The CityKey gives residents the chance to unlock their full potential and experience all the things our great city has to offer. Visit: Chicago CityKey | City Clerk of Chicago (chicityclerk.com) for more information.