Almost impossible to play, thanks to their small screens and touch operation, the uselessness of both pales into insignificance when compared to the case of a Cannon Pixma printer hacked to play Doom. Featuring no buttons and therefore impossible to operate, the FPS-capable printer was the result of an experiment by security expert Michael Jordon. Designed to show the increased safety risk associated with the internet of things, the installation of Doom demonstrated a now patched weakness in Canon’s printer security.