From an ordinary keyboard, after the user enters data, the background does not encrypt the source data. You can directly view the data by accessing the background. When you enter data on the encryption keyboard, the driver of the encryption keyboard passes 128-bit confidentiality. The algorithm encrypts the input information. And the encrypted keyboard background display data is not the original data, the encrypted ciphertext is displayed, and these ciphertexts will be displayed in garbled form, so that there will be no opportunity to send molecules.