1. An electronic device comprising: at least one multi-value key associated with at least two input data values, wherein each multi-value key includes a plurality of units and each input data value corresponds to at least one unit; an eye-tracking system for determining an area where a user is gazing by monitoring an eye movement of the user; and an input value selection module coupled to the plurality of units and to the eye-tracking system; a plurality of pressure sensors coupled to the input value selection module, wherein at least one pressure sensor is associated with each unit of the multi-value key and wherein each of the pressure sensors is configured to measure a pressure asserted on the associated unit of the multi-value key; wherein the input value selection module determines probabilistically which input data value was entered based on a value received from at least one unit and on an area where the user is gazing by concurrently analyzing the pressure measurements and the area at which the user is gazing to determine which input data value was entered by: assigning a pressure weight to each of the input data values associated with the multi-value key, the pressure weight corresponding to measured pressured asserted on the unit corresponding to the input data value; assigning a gaze weight to each of the input data values based on an amount of time that the area at which the user is gazing coincides with the unit corresponding to the input data value; combining the pressure weight and the gaze weight of each input data value; and entering the input data value based on the combined pressure and gaze weights.