About 500 Chicago residents have received the city's new municipal ID cards on the first day that the CityKey cards were available.

The CityKey program provides immigrants living in the country without legal permission a valid form of identification.

Cardholders are eligible for discounts at Chicago Sky games and at some performances at the Joffrey Ballet and a free one-day admission to the Field Museum.

The city is giving out the first 100,000 cards for free, but after that adults will pay $10 and children will pay $5. Senior citizens won't have to pay for the cards, and certain groups such as veterans and low-income residents could get a fee waiver.