However video technology was to be deployed in analog television broadcasting long before it could become practical—or popular—for videophones.
During the first manned space flights, NASA used two radio-frequency (UHF or VHF) video links, one in each direction.
Videoconferencing systems throughout the 1990s rapidly evolved from very expensive proprietary equipment, software and network requirements to a standards-based technology readily available to the general public at a reasonable cost.
Finally, in the 1990s, Internet Protocol-based videoconferencing became possible, and more efficient video compression technologies were developed, permitting desktop, or personal computer (PC)-based videoconferencing.
TV channels routinely use this type of videotelephony when reporting from distant locations.
This was first embodied in the device which came to be known as the video telephone, or videophone, and it evolved from intensive research and experimentation in several telecommunication fields, notably electrical telegraphy, telephony, radio, and television.
Many of these technologies, such as the Media space, are not as widely used today as videoconferencing but were still an important area of research.
The first dedicated systems started to appear as ISDN networks were expanding throughout the world.
One in 20 would even be comfortable giving personal security or banking details to a stranger, with the same number saying they would let someone have remote access to their computer to fix a problem they haven’t reported.
A videophone is a telephone with a video display, capable of simultaneous video and audio for communication between people in real-time.