Like the DV326 videophone, Tango works with Packet8 services, plus users must call other parties with the same video equipment to use the video calling feature.
The Packet8 video phone for example, has a DV326 VideoPhone that delivers high-quality, full-motion video on a built-in 5-inch active matrix color display.
You just continue using your regular phone as usual for voice only calls, or dial a Packet8 Tango or DV326 VideoPhone customer for video calls.
The VideoPhone has all the bells and whistles of a full featured business phone, including speed dial, 100-number phonebook.
One notable example would be Dr. Steve Mann, who developed the Linux videophone watch.
Streaming video and two-way videophone are among the newer techniques.