Telediphone is like a special phone that helps people talk to each other who are very far away. It's like calling your grandma who lives in a different state, but instead of just hearing her voice, you can also see her face on a TV screen!
Telediphone works by using special technology and internet connections. Someone on one end of the phone talks and the sound travels through the internet to the other person's phone. At the same time, video from a small camera on the phone is sent to the other person, so you can see them too!
This is especially useful when people can't be together in person, like during the pandemic when we can't visit our friends or family who live far away. It's like using a regular phone, but much cooler because you can actually see the person you're talking to.