lua-users home
lua-l archive

[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index] [Thread Index]



Le 21 mai 08 à 16:30, Tony Finch a écrit :
On Tue, 20 May 2008, Joseph Stewart wrote:

1. PDF with embedded unique serial number per purchaser

That's what the Pragmatic Programmers do for the electronic editions of
their books.

IIRC, http://www.apress.com uses something like the purchaser's email address as a password.

--
Bertrand Mansion
Mamasam
Work : http://www.mamasam.com
Blog : http://golgote.freeflux.net