| 摘要 |
<p>A device for preventing logging of computer on-screen keyboard has a pointer device and tandem device. The pointer device comprises a first transmission interface to connect the host computer, and an encryption module to encrypt and transfer data of the pointer device to the first transmission interface. This data contains pointer coordinates. A pointer data module is used to obtain, convert and save the coordinate data of the pointer device. A push-button data module is used to obtain, convert and save the push-button data of the existing pointer device. A physical interface module is used to obtain coordinates of the pointer device and original data of key events, The original data is converted into coordinates or push-button data of the pointer device by the pointer and push-button data modules. Then the encryption module decides if it is necessary to transfer the coordinate or push-button data in the form of encryption.</p> |
