A dual-camera face recognition device and method are disclosed. In the invention, sliding axis of the ball and socket joint is inclined relative to both the first axis and the second axis. In embodiments, indicators are provided on the holder. In some embodiments, an N+ region near the control gate helps to achieve a good coupling ratio between the control gate and floating gate. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract. A silicon oxide layer, a polysilicon layer and a nitride layer are subsequently deposited on the semiconductor substrate and cell area and then the horizontal portions of the three layers above STI are removed by anisotropic etching.