Software and apps
Skype allows people who can’t hear very well to have conversations with other people by using their computer instead of a phone. Skype allows video calling, therefore the use of sign language, and it is also an instant text messenger.
You can also use Skype on a tablet or a smartphone.
YouTube has an automatic transcription service built-in. Unfortunately if the speech isn’t very clear it can get it wrong.
YouTube also has a feature which lets you input your own subtitles to the video once it has been uploaded, or upload a complete timed transcription as a text file.