| 00 | None | Has no technical protection | 9 | |
| 01 | DRM | Has DRM protection | 9 | |
| 02 | Digital watermarking | Has digital watermarking | 9 | |
| 03 | Adobe DRM | Has DRM protection applied by the Adobe CS4 Content Server Package or by the Adobe ADEPT hosted service | 10 | |
| 04 | Apple DRM | Has FairPlay DRM protection applied via Apple proprietary online store | 12 | |
| 05 | OMA DRM | Has OMA v2 DRM protection applied, as used to protect some mobile phone content | 12 | |
| 06 | Readium LCP DRM | Has Licensed Content Protection DRM applied by a Readium License Server | 34 | |
| 07 | Sony DRM | Has Sony DADC User Rights Management (URMS) DRM protection applied | 34 | |