On 08/21/2010 03:32 AM, Norbert Nemec wrote:
I really appreciated the way Peter Langtangen handled this for his book
"Python Scripting for Computational Science": There is an encrypted PDF
for download for which you need a password like "Enter the first word on
page XXX".
Of course such a measure can still be worked around, but it is
sufficient barrier that the PDF will not easily spread around and the
protection is non-intrusive enough to allow people who purchased the
paperback to have the PDF for reference.
The Peter Langtangen book you mention is easily found on the net, no
password required. Frankly, if your book isn't available as a piratable
PDF, your book is a failure -- meaning there isn't sufficient interest
for people to pirate it. I'm not condoning copyright infringement, I'm
just stating facts.
