| 摘要 |
<p>The information marked on one electronic content is compared to that marked on another electronic content in order to determine if either are unauthorised. There are a number of ways of comparing the information in order to make this determination. One way is to detect if two electronic content accessed by the same device have information associated with different users. Another way is to detect if two electronic content accessed by different devices have information associated with a single user. A further way is to use the time or sequence of access in conjunction with the information. Other ways of determining unauthorised content are disclosed.</p> |
