Quote:
Originally Posted by cybmole
and B&N link their DRM to your credit card number, allegedly - better finish those books before your card expires  |
Not funny. The user and credit card data is run through a hash program and the resulting hashcode is what unlocks the DRM. In fact once you unlock a book that uses a particular set of user data and creditcard #, any others after that (that use the same data) will be unlocked for you automatically. And the expiration date is not part of the hash.
Luck;
Ken