Signature forgery

Signature forgery refers to the act of falsely replicating another person's signature.

Not to be confused with digital signature forgery or analog signature analysis.

Methods

Several different methods can be used to forge signatures. One method is the "freehand method", whereby the forger, after careful practice, replicates the signature by freehand. Although a difficult method to perfect, this often produces the most convincing results.[1]

In the "trace-over method", the sheet of paper containing the genuine signature is placed on top of the paper where the forgery is required. The signature is traced over, appearing as a faint indentation on the sheet of paper underneath. This indentation can then be used as a guide for a signature.[1]

Detection

A number of characteristics can suggest to an examiner that a signature has been forged, mostly stemming from the forger focusing on accuracy rather than fluency. These include:[1]

  • Shaky handwriting
  • Pen lifts
  • Signs of retouching
  • Letter proportions
  • Very close similarity between two or more signatures

References
  1. Jackson, Andrew R. W. (2007). Forensic Science. Pearson Education. pp. 235–238.
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