Video Relay System
The other day I went to see my aunt and she showed me her Video Relay System. It allows deaf people to communicate with other deaf people via their TV and a box-top camera. There is also a relay service, so that the deaf person can use sign language to communicate with an interpreter, and in turn the interpreter can make phone calls and translate between the deaf person and the hearing person.
In the past, the TTY has served this need. The TTY can connect to another TTY and two people can type directly back and forth, or the TTY can call a relay service, where a relay operator will speak what's typed on the TTY to a hearing person over the phone, and type back what the hearing person says.
The TTY was a great benefit: it came out in the 1960s and was used long before people had personal computers and modems.
The VRS is even better because it allows for more natural conversation. Speaking is faster than typing, and so is using sign language. I watched my aunt make a phone call to a company and the interpretation was practically real-time: as the person on the phone was speaking, the interpreter was signing what the person said.
Very cool!