Chicago has launched a new optional identi cation card that serves as a valid ID while also working as a library and transit card – with some extra bene ts related to participating merchants and sports teams still to be announced.

The CityKey — presented through the Once of the City Clerk — was conceived as a way to “reduce barriers to those who have difficulty accessing government-issued identification.” The vision expanded to provide benefits to every citizen through partnerships with cultural and commercial organizations. The number of partnerships is expected to expand through January, a new list announced in February.

Chicago is just the latest in a string of cities to create such a program, including San Francisco, New York, Detroit, and Milwaukee.