Developed by Stockholm-based PrintDreams, the XDR is a handheld inkjet printer that wirelessly communicates with a smartphone app via Wi-Fi. Full-color graphics are created on that app, and then transmitted to the PrintBrush. A USB cable can alternatively be used to transfer data, plus up to four image files can be stored in the XDR's own internal flash memory, so it can later be used without a smartphone (or tablet or laptop) present.

To print the graphics, users simply drag the device across "almost any surface," going either left-to-right or right-to-left. Utilizing an optical sensor and an inertial measurement unit, the XDR determines the direction and speed of movement, printing the graphics so that they come out the right way around regardless.