Hi Jason,
Your user is probably referring to the ELI (Ear Level Instument) which can work with any Bluetooth enabled device, it was invented to work with Mobile phones that don't have the same built-in compatabilty that Landline phones do. Have a look at the tech pdf for an excellent description;
A Time magazine Coolest Invention, ELI lets hearing aid wearers go wireless
EDEN PRAIRIE, Minn.(November 15, 2005)Starkey Laboratories, one of the worlds leading hearing technology companies, today introduced ELI (Ear Level Instrument), the first-ever device that turns hearing aids into wireless headsets. A Bluetooth-enabling device, ELI is the only product of its kind designed to provide wireless connections between hearing aid wearers and the growing assortment of Bluetooth-compatible devices. The innovative new product is currently profiled in Time magazines Coolest Inventions issue.
Our mission at Starkey is not only to research, design and develop hearing devices that improve virtually any hearing impairment but to actually improve the lives of those who are hearing impaired, said Jerry Ruzicka, president of Starkey Laboratories. ELI is a shining example of this as it is the first product of its kind to eliminate the interference hearing instrument wearers encounter when using portable devices like cell phones. In essence, ELI offers the hearing impaired the ability at long last to be wireless.
From this doc;
http://www.audiologyonline.com/news/displaynews.asp?news_id=1909
http://www.elihearing.com/Resource/TechReport.pdf
http://www.bluetomorrow.com/content/section/178/282/
Hope this helps!
Rob
