Methods, devices, and computer-readable storage media are provided. Some embodiments of the invention include an image processing device displaying on a display of the image processing device a machine-readable code, wherein information encoded in the machine-readable code is usable by a mobile computing device to establish a communication session between the mobile computing device and the image processing device. In some embodiments, the mobile computing device reads the machine-readable code, obtains the information by decoding the machine-readable code, and establishes the communication session using the information. In some embodiments, during the communication session, the image processing device receives a scan command, scans a physical document in response to the scan command, and sends an electronic document representing the scanned physical document to the mobile computing device.