Cirrent has established partnerships with several major Internet service providers, including Comcast Cable, to create a worldwide network of ZipKey hotspots. Additionally, many router companies will be adding support for ZipKey in their home routers and other Wi-Fi products such as set-top boxes may enable ZipKey for use in the home.
The WCM is configured with the list of SSIDs and Hotspot 2.0 roaming ids that make up the ZipKey network, so that the device can detect that it is in range of a ZipKey network and connect automatically. The WCM will get an updated list from the Cirrent cloud whenever new ZipKey networks are added.
For your testing, if you are not in range of a ZipKey network, you can always configure a test network as a ZipKey network, as describe here.
Contact Cirrent if you would like more information on the locations of the ZipKey networks.