Induction loop for the home?

[Quartz]

My father is getting deaf, but still enjoys his TV. Unfortunately this means that he has the volume unreasonably high. Now, in cinemas and theatres they have induction loops to obviate this. So, what exactly are they? Can I set one up at home for my father?

[Ian J]

The RNID website has quite a lot of info on setting up an induction loop here

[Quartz]

Much obliged!