Some researchers build a drone with a phone attached to it and flew it around office areas. Why? The phone would pick up the local WiFi enabled printers, pretend to be them, and intercept any incoming jobs. Now if they where smart they could have had it re-send the job to the proper printer so the user(s) don’t get suspicious.
http://www.wired.com/2015/10/drones-robot-vacuums-can-spy-office-printer/