The laughter was nearly deafening when this product was introduced http://arstechnica.com/gadgets/2013/05/password-minder-the-b...

I wonder whether its time has finally come.

Edit: It's worth noting that each typewriter is unique and will leave a telltale signature subject to identification https://en.wikipedia.org/wiki/Typewriter#Forensic_examinatio...

Of course, modern printers aren't immune to this and many models incorporate identifiers by the manufacturers to aid forensic investigation https://en.wikipedia.org/wiki/Printer_steganography