Why you must not trace over a signature, add marks or fold the document at the element in question.
Do not trace over the disputed signature in pencil, write explanations beside it, fold the sheet at the signature, laminate the document or cut out a fragment.
It is preferable to keep the original in a separate protective sleeve and show the expert the entire document.
Do not detach the signature area, laminate the document or add marks beside the strokes. Preserve the original folds, fastenings and arrangement of the sheets. It is preferable to agree packaging and permissible handling with the specialist, taking account of the document's material and condition.
A scan or photograph may be prepared for discussion, but neither replaces the original for every task. If explanatory graphic marks are used, add them only to a separate copy. Record who handled the document and when, and what operations were performed before it was received.
If the document has already been damaged or treated, it is important to disclose this explicitly. Known intervention can be taken into account as a limitation; undisclosed treatment makes the detected features harder to explain.
On this subject: A copy instead of the original document: limitations to consider.
State which document is to be examined, whether the original exists, which specimens are available and why the report is needed: court, a notary, an inheritance dispute, a corporate dispute or a pretrial claim.
