A system (100, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300) comprising: an actuator configured to receive a haptic signal and output a haptic effect based at least in part on the haptic signal, the haptic effect configured to simulate a texture; a touch-sensitive interface (114, 218, 314) configured to detect a user interaction and output an interface signal; and a processor in communication with the actuator and the touch-sensitive interface, the processor configured to: receive the interface signal; receive a display signal comprising a plurality of pixels (351, 352, 353, 354, 355, 356) defining a display area; determine a first texture associated with a first group of pixels defining a first section of the display area; determine a second texture associated with a second group of pixels defining a second section of the display area; and transmit a haptic signal configured to cause the actuator to: output a first haptic effect configured to simulate the first texture if the user interaction is associated with the first section of the display area, and output a second haptic effect configured to simulate the second texture if the user interaction is associated with the second section of the display area characterised in that: the system comprises a plurality of said actuators; said first and second groups of pixels being operative to display a plurality of colours; the processor is further configured to map each colour displayed by said groups of pixels to a specific actuator. an actuator configured to receive a haptic signal and output a haptic effect based at least in part on the haptic signal, the haptic effect configured to simulate a texture; a touch-sensitive interface (114, 218, 314) configured to detect a user interaction and output an interface signal; and a processor in communication with the actuator and the touch-sensitive interface, the processor configured to: receive the interface signal; receive a display signal comprising a plurality of pixels (351, 352, 353, 354, 355, 356) defining a display area; determine a first texture associated with a first group of pixels defining a first section of the display area; determine a second texture associated with a second group of pixels defining a second section of the display area; and transmit a haptic signal configured to cause the actuator to: output a first haptic effect configured to simulate the first texture if the user interaction is associated with the first section of the display area, and output a second haptic effect configured to simulate the second texture if the user interaction is associated with the second section of the display area receive the interface signal; receive a display signal comprising a plurality of pixels (351, 352, 353, 354, 355, 356) defining a display area; determine a first texture associated with a first group of pixels defining a first section of the display area; determine a second texture associated with a second group of pixels defining a second section of the display area; and transmit a haptic signal configured to cause the actuator to: output a first haptic effect configured to simulate the first texture if the user interaction is associated with the first section of the display area, and output a second haptic effect configured to simulate the second texture if the user interaction is associated with the second section of the display area output a first haptic effect configured to simulate the first texture if the user interaction is associated with the first section of the display area, and output a second haptic effect configured to simulate the second texture if the user interaction is associated with the second section of the display area the system comprises a plurality of said actuators; said first and second groups of pixels being operative to display a plurality of colours; the processor is further configured to map each colour displayed by said groups of pixels to a specific actuator.