Getting to Know Hearing Loops
When you see a blue sign of a human ear that's a cue to hearing aid users that they can press a tiny button to hear a special broadcast sent directly to their device. This is called a hearing loop, a thin copper wire that radiates electromagnetic signals in a room. A tiny receiver called a telecoil built into most hearing aids and cochlear implants pick up the signal. With the flip of a switch on the device, sound comes through with greater clarity than can be heard by someone with normal hearing. This might be music, sound from a movie,
or a speaker. Hearing loops are better known in Europe than in the US, where only about a thousand have been installed in museums, stores, theaters, airports, and sports arenas.
The sign should have a "T" symbol in the lower right-hand corner of the ear symbol if there is an induction loop installed. If there is solely an ear with a slash in the middle of the ear, then the sign indicates there is some sort of hearing access but good luck trying to figure out what the site has. If there are dots/slashes running through the ear then the sign indicates that an assistive listening system is present but it could be an FM or Infrared system and headsets and/or neck loops may be available.