I remember reading about the Kaye Device ages ago. It had been developed in Australia or New Zealand, and was also called a "torch", British for flashlight. It then developed into the Sonicguide, mounted on an eyeglass frame, and I had used a prototype in the early 70s. When it was marketed it cost $2000. . I had really liked it, but it was far too expensive. Ed Meskys ================================================================ The NHAB-tech mailing list Archives: //www.freelists.org/archives/nhab-tech Administrative contact: nhab-tech-moderators@xxxxxxxxxxxxx Unsubscribe: Send a message to nhab-tech-request@xxxxxxxxxxxxx with the word 'unsubscribe' in the message body. ================================================================