Why is it important for security guards to use black pen for their reports?

Using a black pen for writing reports is important primarily because it ensures the documents are easier to read. The stark contrast that black ink provides against white paper helps to enhance legibility, which is crucial in ensuring that the information contained in reports can be easily understood by anyone reviewing them. This clarity is particularly significant in security contexts where accurate communication is vital for incident reporting, documentation, and record-keeping.

While the appearance of professionalism, acceptance of colors, and matching official documents are relevant considerations, they do not directly address the core issue of readability, which is critical for effective communication and operational integrity in security practices.