Click the Insert menu in CAD, select External Reference Manager to insert dwg format signature, and select Image Manager to insert image class signature. When a signed CAD drawing is copied to a computer other than the signed computer, the signature will be lost when it is opened, which can prevent the signature from being stolen.

1. To add an electronic signature, the first step is to sign a qualifier.

2. AlgoLab Photo Vector 7 image vectorization tool will be used. Note that Win 7 should use more than 64 bits, XP and Win 7 WIN7 32 bits can be used.

3. After opening the signed picture, click on the villain as shown by the character arrow to automatically process the character.

4. After opening the signed picture, click the villain as shown in the figure arrow to automatically process the picture, and then click Save. Remember to save it in DXF format; It should be noted here that DXF format file is a CAD legend file format.