A control server comprising: a receiving unit configured to receive first location information indicating a location of specific web page data via a data processing device, in a case where a terminal device comprising a web browser receives the specific web page data from a specific service providing server by using a first type of wireless communication and sends the first location information to the data processing device by using a second type of wireless communication, the specific web page data representing a thumbnail image, the second type of wireless communication being a short distance wireless communication having a shorter wireless communication distance than the first type of wireless communication; a display control unit configured to cause a display unit of the data processing device to display at least N items of account information among M items of account information currently stored in the data processing device, in a case where the first location information is received, the M being an integer of two or more, the N being an integer which is one or more and is equal to the M or less, each of the N items of account information being available for receiving a data providing service from the specific service providing server; a first acquisition unit configured to acquire specific authentication information corresponding to specific account information from the data processing device, in a case where the specific account information is selected by a user from among the N items of account information displayed on the display unit; a first command communication unit configured to send a first type of command including the specific authentication information to the specific service providing server by using the first location information, so as to receive a first type of response including second location information from the specific service providing server, the second location information indicating a location of an image file which represents a resource image, the resource image representing the same object as the thumbnail image, a number of pixels of the resource image being greater than a number of pixels of the thumbnail image; and a specific process execution unit configured to execute a specific process by using the second location information included in the first type of response, the specific process including a process of causing a print execution unit of the data processing device to execute a print according to the image file. a receiving unit configured to receive first location information indicating a location of specific web page data via a data processing device, in a case where a terminal device comprising a web browser receives the specific web page data from a specific service providing server by using a first type of wireless communication and sends the first location information to the data processing device by using a second type of wireless communication, the specific web page data representing a thumbnail image, the second type of wireless communication being a short distance wireless communication having a shorter wireless communication distance than the first type of wireless communication; a display control unit configured to cause a display unit of the data processing device to display at least N items of account information among M items of account information currently stored in the data processing device, in a case where the first location information is received, the M being an integer of two or more, the N being an integer which is one or more and is equal to the M or less, each of the N items of account information being available for receiving a data providing service from the specific service providing server; a first acquisition unit configured to acquire specific authentication information corresponding to specific account information from the data processing device, in a case where the specific account information is selected by a user from among the N items of account information displayed on the display unit; a first command communication unit configured to send a first type of command including the specific authentication information to the specific service providing server by using the first location information, so as to receive a first type of response including second location information from the specific service providing server, the second location information indicating a location of an image file which represents a resource image, the resource image representing the same object as the thumbnail image, a number of pixels of the resource image being greater than a number of pixels of the thumbnail image; and a specific process execution unit configured to execute a specific process by using the second location information included in the first type of response, the specific process including a process of causing a print execution unit of the data processing device to execute a print according to the image file.