Mobile device for printing schedule data

A mobile telecommunications device including:

• a transceiver for sending and receiving signals via a wireless telecommunications network;
• a processor for processing schedule data to generate dot data representing a visual layout of the schedule data;
• a printer having a printhead configured to receive the dot data and print it onto a print medium together with a two dimensional pattern of coded data such that the visual layout and the two dimensional pattern of coded data to create a positional registration between the visual layout and the two dimensional pattern of coded data which, during use, is stored in a remote computer system, print medium having a linear-encoded data track extending in an intended direction of printing;
• a data track sensor configured to sense the data track during printing of the dot data;
• fire control means connected to generate a fire control signal based on an embedded clock signal within the data track, the fire control means being configured to generate the fire control signal in the form of a clock signal extracted from the sensed data track such that the printer operates the printhead in accordance with the clock signal;
• and,
• an optical sensor for sensing at least some of the two dimensional pattern of coded data such that the processing means generates indicating data from the sensed coded data, the indicating data being indicative of a location in the visual layout, the indicating data being sent to the remote computer system which generates a response to the transceiver based on the positional registration between the coded data and the visual layout;
• wherein,
• the processor initiates an action regarding an entry in the schedule data, the action being based on the response from the remote computer system.