Qard is a simple QR Code business card generator.
To share your business card, just show the QR code to anyone with a QR code on his phone and he or she will be able to store your business card particulars in his contacts list.
The QR code is stored locally in your phone only, Qard does not store any of your particulars anywhere.
To make this a permanent fixture on your phone, choose to 'Add to Home Screen'.