This would make every Comcast Internet customer's home a hotspot, potentially knitting together a Wi-Fi signal that could blanket a city. Roughly 100,000 New Jersey Comcast customers are now set up in a test phase.
It is not the only comms company which is trying it. A Spanish company called Fon takes a similar approach with the wireless routers it makes available to its residential customers in the United States and other nations.
The $50 router also broadcasts private and public Wi-Fi signals. The purchase of a Fon router for home use entitles that residential customer to free Internet access via any other Fon router, anywhere in the world.