A system for linking and controlling terminals is disclosed. A user terminal includes an image unit configured to output image data corresponding to a first image to be shared with a receiving terminal viewed by a user of the user terminal, and a signal unit configured to transmit the image data outputted from the image unit and position information of a touch input touching the user terminal to the receiving terminal. Here, the position information is position information of the touch input touching the user terminal at a preset pressure level or lower or with a preset contact area or smaller, and is displayed on the receiving terminal in an image form.