14. The method of claim 11 , wherein the at least one user-specific characteristic of step (c) also includes a plurality of confidence scores associated with failed attempts of the user to store a nametag.
14. The method of claim 11 , wherein the at least one user-specific characteristic of step (c) also includes a plurality of confidence scores associated with failed attempts of the user to store a nametag. 15. The method of claim 14 , wherein the step (d) determination is further carried out by calculating an average of the plurality of confidence scores, and setting the user-specific confidence threshold to a value that is relative to the calculated average.