1. A method for controlling a touch screen input device having a display, the method comprising: first receiving a first input of a command instruction in response to interaction of either a finger or stylus with the display; displaying the input command instruction on the display; first determining whether an input source of the command instruction originated is the finger or the stylus; second receiving as second input an at least partial encirclement of a region on the display, the second input originating by the other one of the finger or the stylus; second determining whether an input source of the at least partial encirclement is the finger or the stylus; executing the command instruction in response to (a) the partial encirclement at least partially enclosing the command instruction and (b) the detected input source of one of the command instruction and the partial encirclement is the finger and the detected input source of the other of the command instruction and the partial encirclement is the stylus; wherein the device is programmed not to perform the executing step in response to both the command instruction and the partial encirclement being input by a same detected input source.