1, "Open Document" opens a document that needs electronic signature with the preview that comes with the mac.

2. "Prepare signature" Write down the desired signature with a clean white paper.

3. "Start editing the document" Click the icon similar to a briefcase. As shown in the figure:

4. The figure and the figure describe "Start signature making".

5. "recognize handwriting" holds the signature just written and points it at the camera.

6. "Sign the document" to sign first, and then sign the document.

7. Then save it, and it's done.