Machine Generated Documents Examination Service
Every document produced from a machine has the potential to be identified back to that machine. Mass production and wear and tear on any mechanical device can produce faults individual to a particular machine. This means that any printer, photocopier, typewriter etc can be identified as having produced a document, and in some cases, within a certain time frame.
For example, dirty marks accumulating on the glass on a photocopy machine form a unique pattern until the glass is cleaned. A defective drum unit can also leave identifiable marks until the drum is replaced. If previous samples from a machine are examined, a time frame when a photocopy document came into existence can be determined.