Hi All, I am new subscriber to Optacon-I@xxxxxxxxxxxxxx I am not blind, but a researcher into portable devices for tactile display of real-time video feed. Very interested in tactile technologies, for my organization will need to choose one to use, for prototype of my invention. I hope it is appropriate to speak of here, knowing this site is mainly for users and researchers concerning the Optacon. My invention is Patent Applied for, can be accessed for view at http://www.freepatentsonline.comy2002/0173823.html , select "Download PFF 20020173823" for version with diagrams. We (am forming nonprofit org) are having difficulty finding a low cost tactile method, that will meet frequency and minimal power drain requirements, and not too expensive. I would like any information about the piezoelectric actuators in the Optacon. These are probably a type we can use in early prototypes, if they can be bought in bulk (not installed). Thanks, and God Bless You All, Bill English to view the list archives, go to: www.freelists.org/archives/optacon-l To unsubscribe at any time, just send a message to: optacon-l-request@xxxxxxxxxxxxx with the word "unsubscribe" (without the quotes) in the message subject. Tell your friends about the list. They can subscribe by sending a message to: optacon-l-request@xxxxxxxxxxxxx with the word "subscribe" (without the quotes) in the message subject.