Abstract: A method for usage of a keyboard interface with less number of keys than characters in a language is provided herein.

Abstract: The present invention provides a method for activation of functions in a target computer device using a smart mobile device The method comprising the steps of: receiving inputs from the smart mobile device sensors to identify motion or orientation of the device in space and identify touch screen inputs, receive inputs from camera of the target computer device capturing movement and orientation of smart mobile device and/or motion of user's body parts, applying algorithms to translate and synchronize data from various sensors of the smart mobile device, by applying cross-match algorithm on data from different multiple sensors, process simultaneous inputs data from the smart mobile device and/or the data from camera of the target device which identifies the movements of the smart device to determine user 3D control commands based on pre-defined rules and translating determined control commands into instructions in the target computer device.

Abstract: A method for user identification by using multiple sensing devices configured for sensing at least one characteristic associated with user's gestures. The method includes the steps of: receiving data from the sensing devices indicative of at least one gesture of a user; identifying at least one gesture and at least one characteristic thereof from the data from each sensing device, using at least one gesture recognition analysis process; and identifying the user according to the identified at least one gesture and characteristics, wherein these steps are carried out via at least one processor of at least one user device.