the present invention provides a finger - identifying keyboard , comprising a plurality of keys ; a plurality of sensors , each of which uniquely represents and identifies a different finger ; a coding synthesizer used to identify simultaneously the keys and the fingers used to press the keys , to synthesize the coding and to generate the resultant input coding signal . the invention can effectively reduce the number of keys on the keyboard , thereby achieving the goal of reducing the size of the keyboard so as to be adapted to the requirements of various handheld devices . even though the size of the keyboard is reduced , the size of the finger keys can remain the same size to facilitate typing .