Abstract: A system configured to transfer an electronic file includes a non-volatile storage memory; an autonomous power supply; a transfer system comprising a transmitter configured to transmit a file to be transmitted, the transmitter comprising a first contact connection port configured to enable mechanical fitting to a contact connection port of a second system, a receiver configured to receive a file, the receiver comprising a second contact connection port configured to enable mechanical fitting to another contact connection port of the second system, and a transmission control system configured to authorize or prohibit a transmission of an electronic file to the second system, the transmission control system including a system configured to recognize mechanical fitting to the second system.