business cards; plastic business cards of plastic; metal business cards; Downloadable computer software for generating and storing QR codes and digital business cards, sharing contact information, and managing contacts; digital business card scanner; digital business card reader; providing a website featuring an on-line non downloadable software for use that enables users to create digital business cards, share contact information, and manage contacts; providing a website featuring online non-downloadable software that enables users to share digital business cards and contact information; software as a service (SAAS) services featuring software for sharing digital business cards and contact information; Near field communication (NFC) tags for providing contact information; business cards featuring NFC tags; NFC tags