12. A vehicle including a device for inputting and identifying a character string, the device including: a keyboard implemented user interface located inside the vehicle to detect and to input a plurality of keystrokes into the keyboard implemented user interface in succession to form a character string including a plurality of alpha-numeric characters; a controller of the vehicle to carry out a confidence analysis, wherein comparisons are carried out between each keystroke of the plurality of keystrokes with reference data for alpha-numeric characters stored in a database, wherein a confidence value is assigned which indicates a level of confidence that an input keystroke is meant to correspond to one of the plurality of alpha-numeric characters represented on the keyboard implemented user interface, wherein the confidence value is 0, 1, or a value therebetween, wherein the confidence analysis generates a confidence value for each alpha-numeric character represented on keys of the keyboard implemented user interface at a touch location or adjacent to the touched location on the keyboard implemented user interface, wherein each of the alpha-numeric characters for which confidence values are generated are identified as potentially relevant alpha-numeric characters, wherein the controller forms alpha-numeric character combinations based on the identified, potentially relevant alpha-numeric characters assigned to each keystroke; wherein overall confidence measures for the alpha-numeric character combinations are determined based on the confidence values assigned to the potentially relevant alpha-numeric characters included in the alpha-numeric character combinations; and a display coupled to the controller, by which a subset of the formed alpha-numeric character combinations is hierarchically output onto the display as a function of the overall confidence measures, wherein the formed alpha-numeric character combinations with higher overall confidence measures are listed before alpha-numeric character combinations with lower overall confidence measures, and wherein the subset of output characters combinations includes only formed alpha-numeric character combinations having an overall confidence value above a specified adaptable threshold value.
12. A vehicle including a device for inputting and identifying a character string, the device including: a keyboard implemented user interface located inside the vehicle to detect and to input a plurality of keystrokes into the keyboard implemented user interface in succession to form a character string including a plurality of alpha-numeric characters; a controller of the vehicle to carry out a confidence analysis, wherein comparisons are carried out between each keystroke of the plurality of keystrokes with reference data for alpha-numeric characters stored in a database, wherein a confidence value is assigned which indicates a level of confidence that an input keystroke is meant to correspond to one of the plurality of alpha-numeric characters represented on the keyboard implemented user interface, wherein the confidence value is 0, 1, or a value therebetween, wherein the confidence analysis generates a confidence value for each alpha-numeric character represented on keys of the keyboard implemented user interface at a touch location or adjacent to the touched location on the keyboard implemented user interface, wherein each of the alpha-numeric characters for which confidence values are generated are identified as potentially relevant alpha-numeric characters, wherein the controller forms alpha-numeric character combinations based on the identified, potentially relevant alpha-numeric characters assigned to each keystroke; wherein overall confidence measures for the alpha-numeric character combinations are determined based on the confidence values assigned to the potentially relevant alpha-numeric characters included in the alpha-numeric character combinations; and a display coupled to the controller, by which a subset of the formed alpha-numeric character combinations is hierarchically output onto the display as a function of the overall confidence measures, wherein the formed alpha-numeric character combinations with higher overall confidence measures are listed before alpha-numeric character combinations with lower overall confidence measures, and wherein the subset of output characters combinations includes only formed alpha-numeric character combinations having an overall confidence value above a specified adaptable threshold value. 13. The vehicle of claim 12 , wherein the specified, adaptable threshold value is selected as a function of the number of multiple user inputs.