[pdftex] Scanned and searchable PDF?

[Martin Schröder]

2007/8/9, Frédéric Darboux <Frederic.Darboux at orleans.inra.fr>:
> I have already seen such kind of PDF file, but I do not know how to
> build one myself. Could it be done using pdfTeX? (and how...)

I've never seen one of these files, but I think it's done thusly:
Create a page with the text and overlay it with the scanned image of
the page. Then only the image will be displayed/printed, but the text
can still be searched.

Best
   Martin