Book Content Search device

Having used both conventional "paper" books and digital e-books, I've found that paper books lack a most convenient feature that their electronic counterparts have - search capabilities. Example - I'm looking for something in my O'reilly Perl book, a reference to changing the perl stack using C. It's not in the table of contents, nor the index, but I do know the word "fiddle" is in the paragraph. I'm screwed.

This device would be about the same size as a tin of Altoids but thinner, with an LCD display touchscreen on the whole of the face. In input mode the LCD shows a little querty keyboard with can be tapped with something small like a pen. When you put in your search string (in my case the word "fiddle") the LCD displays all of the pages with that word on it.

The device is purchased seperately, and can hold several books worth of info. When you purchase the paper book you are given an access code to a download section of the publisher's website. From there you can download the book's data directly into the device, through your PC or MAC via a USB port.

Why not just use your Palm Pilot or an E-Book? Because the search device would be made & sold very cheaply, and is much smaller than the other two devices.

By the way - found the page after all. Page 542.