While a document might seem like just a piece of paper, they routinely are created using multiple different materials. Just think, even a contract may involve at least the presence of toner and writing pen ink.
When documents come into question, it may become important to determine the order in which the various portions of the document were created. For example, whether or not a signature was placed on a document before a printed paragraph.
We at KDX Forensics are currently testing advanced technology known as 3D Profilometry for the examination of the intersections of various document technologies using technology created by Foster+Freeman. As part of this study, we are documenting the characteristics of the intersections of numerous technologies in various sequences to determine what can and cannot be said based on the evidence seen.