How to add a digital signature in Word?

The first layer is about the digital signature of VBA code, not the signature of the file itself.

As for the signature of the document itself, it can be achieved by the following steps:

1. Make sure that the current document has been saved;

2. Click "Office Button";

3. Select "Prepare-Add Digital Signature";

4. If you see a phone box warning that it is best to use a third-party digital signature service, click OK;

5. In the "Get Digital ID" window that pops up, select "Create your own digital ID";

6. Enter your own relevant information in the "Create Digital ID" window;

7. In the next window, enter the purpose of adding digital signature;

8. Click OK.

I assume that you are using Word2007. If you were born in 2003, you can refer to the introduction of this webpage:/Excel/Excel/HP 0524 95572052.aspx.

Although it is about Excel, Word is also applicable.