Videophones let you see and talk (or sign) to someone at the same time. Unfortunately, it’s difficult to lipread using most present day videophones because the picture quality is not quite good enough, and you may experience a short but frustrating time delay between the sound and picture. The picture quality is, however, good enough for sign language communication, although you’d probably need to sign a little more slowly than usual.
A videophone (Image © RNID)
You can purchase stand-alone videophones, such as those that use the ISDN digital network, but video communication is now easier and cheaper using a webcam and a home computer. However, the limitations on quality over the internet still apply at the present time.