Abstract: A control system basing on the use of gestures and functioning especially in mobile terminals. The gesture control system is provided with a general purpose interface (320) with its commands for applications (310) to be controlled. The processing software (330) of the gesture signals includes a training program (331), trained free-form gestures made by the user being stored in the gesture library, and a recognizing program (332), which matches a gesture made by the user to the stored gestures and chooses the most similar gesture thereof. Gestures can hence be used as commands for controlling any application configured or programmed to receive the command. One and the same application functions in different models of mobile terminals without matching, and in a certain mobile terminal all applications can be run, which applications use specified interface commands. The application (310) can be e.g. a game or activity being included in basic implementation of a mobile terminal.

Abstract: A mobile terminal includes a user interface specified at least in part by a user. The mobile terminal includes a user interface specification unit that operates in accordance with a programmed data processor to select, in cooperation with the user, at least one trigger and an action, which together form a rule; to automatically generate a directory structure comprising a set of available events in accordance with a hierarchical information model; to select, in cooperation with the user, at least one trigger value from the available set of events and to define an action to be performed by the mobile terminal in responsive to the at least one trigger value being satisfied.

Abstract: To determine the movement of a device, a three-dimensional measurement of the device's acceleration is provided in known directions with regard to the device, and average signals of acceleration signals parallel to different axes are formed to allow tilt angles of the device with respect to gravity to be defined. Acceleration change signals are formed by removing the average signals from their respective acceleration signals parallel to the different axes. The acceleration change signals and the tilt angles of the device are used for forming a component of the acceleration change of the device, which component is parallel to gravity and independent of the position of the device.