15. A terminal having a touch surface for temporarily revealing a disguised password, comprising: a processor; a display which presents a password field; a touch surface which receives a plurality of password characters typed by a user and operative to detect two movement vectors from a simultaneous movement of two fingertips which slide contiguously and simultaneously against said touch surface, maneuvered such that one of said two fingertips is following the other; and a password disguising module which presents a plurality of replacement symbols, using said processor, in said password field each said replacement symbol being indicative of the reception of another of said plurality of password characters; wherein said password disguising module temporarily replaces the presentation of at least some of said plurality of password characters with the presentation of at least some of said plurality of replacement symbols correspondingly with said simultaneous movement of said two fingertips; wherein said two fingertips slide below or above area wherein said plurality of replacement symbols are presented; wherein the presentation of said at least some replacement symbols is held such that said at least some replacement symbols are temporarily replaced correspondingly with a location of said two fingertips below or above said presentation of said plurality of replacement symbols, wherein said at least some of said plurality of password characters are presented in different groups which are presented simultaneously in said password field, each one of said different groups is presented correspondingly with another of said two movement vectors.
15. A terminal having a touch surface for temporarily revealing a disguised password, comprising: a processor; a display which presents a password field; a touch surface which receives a plurality of password characters typed by a user and operative to detect two movement vectors from a simultaneous movement of two fingertips which slide contiguously and simultaneously against said touch surface, maneuvered such that one of said two fingertips is following the other; and a password disguising module which presents a plurality of replacement symbols, using said processor, in said password field each said replacement symbol being indicative of the reception of another of said plurality of password characters; wherein said password disguising module temporarily replaces the presentation of at least some of said plurality of password characters with the presentation of at least some of said plurality of replacement symbols correspondingly with said simultaneous movement of said two fingertips; wherein said two fingertips slide below or above area wherein said plurality of replacement symbols are presented; wherein the presentation of said at least some replacement symbols is held such that said at least some replacement symbols are temporarily replaced correspondingly with a location of said two fingertips below or above said presentation of said plurality of replacement symbols, wherein said at least some of said plurality of password characters are presented in different groups which are presented simultaneously in said password field, each one of said different groups is presented correspondingly with another of said two movement vectors. 19. The terminal of claim 15 , wherein said password distinguishing module temporarily replaces the presentation of at least some of said plurality of password characters dependently on an activation by a user selection.