In the context of the Criminal Procedure Act, which element is necessary for written statements?

The requirement that a written statement must be signed by the maker is essential for ensuring authenticity and establishing ownership of the content. By signing a statement, the individual confirms that the information provided is true to the best of their knowledge, thereby creating a legal obligation and accountability. This signature acts as a form of validation that the statement is not only accurate but also that the person who made it agrees to its usage in legal proceedings. This signature requirement helps to prevent any disputes regarding authorship and the veracity of the information presented.

The other options do not hold the same level of significance in the context of the Criminal Procedure Act. For instance, there's no mandate that statements must be witnessed by law enforcement, nor is it necessary for them to include personal anecdotes or require annual updates. Therefore, the focus on the signature as a necessary element underscores the seriousness of the written statement as a formal legal document.