Use ABBYY FineReader 14 to sign the document:

1. On the main toolbar, click Signature >; Add a digital signature.

2. Select the certificate you want to use from the Signed As drop-down list. To view the properties of a certificate, you can select it and click Show Certificate.

If the certificate to be used is not in the list, you need to install it first. Right-click the certificate in Windows Explorer, click Install Certificate from the shortcut menu, and then follow the instructions in the Certificate Import Wizard.

3. Select the reason why you signed the document from the Reason drop-down list, or enter a new reason.

4. If necessary, specify the location and contact information of the signature in the "Location" and "Contact Information" fields.

5. If you want to include an image in your signature, please select "Add Custom Image to Digital Signature", and then click the "Select Image" button to browse the image file, and the image will appear on the left side of the signature.

6. Click "Signature".

7. Select the area where you want to place the signature, or click the target location directly.

8. Save the document.