Fluorescent LANs Light the Way
by Rael Dornfest
Related link: http://www.technologyreview.com/web/leo/leo060601.asp
"The flicker of fluorescent lights, long a symbol of institutional drear, may give new freedom to the handicapped . . . Talking Lights Cambridge-based MIT spinoff, is developing a local area network that uses fluctuations in fluorescent lights to transmit data."