In addition to fingers, the mobile phone touch screen can be replaced by capacitance pen.

Because capacitance pen is made of conductive material, it can be used as an auxiliary tool to touch the capacitive screen to operate the mobile phone screen. Therefore, in addition to fingers, the touch screen of mobile phone can be replaced by capacitance pen.

Because the working principle of capacitance pen is that the capacitive touch screen works by using the current induction of human body. It is a four-layer composite glass screen. The inner surface and interlayer of the glass screen are coated with a layer of ITO (namely coated conductive glass), and the outermost layer is a thin layer of silica glass protective layer. The ITO coating is used as the working surface, and four electrodes are led out at four corners, and the inner ITO is the shielding layer to ensure a good working environment.

Therefore, in addition to fingers, the touch screen of mobile phone can be replaced by capacitance pen.

Extended information:

Method of making capacitance pen:

①: Cut the sponge into 6x6x15mm strips, and cut the front end at an angle convenient for holding the pen.

②: wrap the sponge with double-sided tape and fix it on the pen, and the writing side must be flat.

③: Cut the tin foil of cigarette case into 1.5x5mm strips, first stick the middle of the tin foil and the writing side, then stick the tin foil to the refill along the sponge, and finally stick the two sides.

④: Make it conductive, stick double-sided tape on the refill and wrap it with tin foil.

Reference: Baidu Encyclopedia-capacitance pen.