1. A method for inputting and identifying a character string, the method comprising: detecting, with a keyboard implemented user interface located inside a vehicle, a plurality of keystrokes input into the keyboard implemented user interface in succession to form a character string including a plurality of alpha-numeric characters; carrying out, with a controller of the vehicle, a confidence analysis in which each keystroke of the plurality of keystrokes is compared with reference data for alpha-numeric characters stored in a database to assign a confidence value 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, wherein each of the alpha-numeric characters for which confidence values are generated are identified as potentially relevant alpha-numeric characters; forming, with the controller, alpha-numeric character combinations based on the identified, potentially relevant alpha-numeric characters assigned to each of the user input keystrokes, 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 outputting, onto a display coupled to the controller, a subset of the formed alpha-numeric character combinations hierarchically 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 character combinations includes only formed alpha-numeric character combinations having an overall confidence value above a specified adaptable threshold value.
1. A method for inputting and identifying a character string, the method comprising: detecting, with a keyboard implemented user interface located inside a vehicle, a plurality of keystrokes input into the keyboard implemented user interface in succession to form a character string including a plurality of alpha-numeric characters; carrying out, with a controller of the vehicle, a confidence analysis in which each keystroke of the plurality of keystrokes is compared with reference data for alpha-numeric characters stored in a database to assign a confidence value 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, wherein each of the alpha-numeric characters for which confidence values are generated are identified as potentially relevant alpha-numeric characters; forming, with the controller, alpha-numeric character combinations based on the identified, potentially relevant alpha-numeric characters assigned to each of the user input keystrokes, 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 outputting, onto a display coupled to the controller, a subset of the formed alpha-numeric character combinations hierarchically 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 character combinations includes only formed alpha-numeric character combinations having an overall confidence value above a specified adaptable threshold value. 2. The method of claim 1 , wherein the specified adaptable threshold value is selected as a function of the number of multiple user inputs.