| 
                    
                     
| Search over one million articles, find something about almost anything!
 |  |  |  |  | 
   |  | 
                    
                     
| 
| Digital 
Rights 
Management |  | 
... wide variety of DRM systems have also been employed to restrict access to eBooks[?]. See the TCPA / Pallidium FAQ maintained by Professor Ross J Anderson on his Web site at ... |  |    |