The yellow dots that identify a printer · Proposed air date:
Dr. Dave and Evil Steve explain the Electronic Frontier Foundation’s finding that some color laser printers place nearly invisible yellow dots on every page, encoding information such as time and printer serial number. Evil Steve connects the discovery to a Columbo episode in which an old typewriter ribbon preserved what had been typed, linking two generations of unexpected forensic traces.
Listen to the full show’s available recordings · Source recording and timing