When I chatted with the professor using the overhead transparency on the ELMO, he explained that he could use his laptop to project the document but it’s too much to carry. He wondered whether he could project from his Palm Treo which he carries with him always.
Several years back, I purchased a Margi Presenter To Go but never used it since I always bring my laptop when I present. After some research, I discovered that this device is no longer available except by ordering from a company in Australia. So if mine still works, it’s all his to use.