A few other companies are working on something similar, but mQuery has a new software program called Cicero which runs on cellphones with built-in WiFi or Bluetooth and lets them make cheap Voice over Internet Protocol phone calls over a WiFi or Bluetooth access point in the same way that a service like Vonage lets people make VoIP calls over a broadband Internet connection. It means that you could make low-cost calls anywhere you could find a WiFi hotspot, and that businesses could give employees one phone that makes calls over the wireless network in the office and that connects to the regular cellular network everywhere else.