From the IBM website...

Porto Media found its copy protection solution in Copy Protection for Recordable Media (CPRM) a standards-based content protection technology developed by 4C, a consortium comprised of IBM, Intel, Toshiba and Matsushita and implemented as a standard on SD flash memory.

Hmmm, IBM, Intel, Toshiba and Matsushita together have some copy protection technology. Some little firm called e.Digital has copy protection technology. I`m working for a decision maker at Company A (or B or C or D...Z) ... Who`s technology do I want to tell my boss we should use?

Wolfy