Which device did Aiden investigate that led to potential evidence related to unauthorized document transmission?

The choice of the fax machine is relevant because fax machines often play a crucial role in the transmission of documents, especially in environments where physical document sharing is necessary. In cases of unauthorized document transmission, a fax machine can be a key source of evidence. It can retain logs of sent and received faxes, including times and destinations, which can help investigators trace whether sensitive documents were improperly transmitted.

Furthermore, unlike other devices that may not have direct connections to document transmission, the fax machine directly serves the purpose of sending documents. By examining the logs, an investigator can establish whether any unauthorized documents were sent and the specific details surrounding those transmissions. This can also lead to insights about compliance with policies or regulations regarding document handling and sharing.

Investigating the fax machine can reveal not just the documents transmitted, but also the communications network's integrity and whether safeguards against unauthorized sharing were in place. Such direct connections to potential breaches make the fax machine a critical component in the investigation of unauthorized document transmissions.