Note: You must add the Visual Force Component to the Lead and Contact Page Layout to see the Business Card image on the record.
4. Both the Leads and Contacts section have a Page Layouts link. Click the Page Layouts link to go to the Page Layout page.
5. On the Page Layout page, click the Edit link for a page layout.
6. Scroll to Visualforce Pages and click this link. Put the Component_Lead field in your preferred location on the Lead Layout. Put the Component_Contact field in your preferred location on the Contact Layout.
7. Click the Save button.
Tip: Before you scan a card, see: How do I scan a business card from my phone or tablet?