Card Swapp is a QR code scanner, UPC code, UPC barcode, QR reader, QR generator, QR business card, QR code website bookmarker, QR address book, and QR code contacts manager. Card Swapp also scans MECARD, vCard, vCard 2. 1, vCard 3. 0, and vCard 4. 0. Convert your business card information into a QR code for others to scan.