An account of explorations into putting QR codes onto business cards in advance of #tdc12 https://govx.socitm.gov.uk/spaces/twictpublic/knowledge/business-cards-qr-codes-and-vcard-files Graham Jordan. Sent on Thursday, 24 May 2012 at 17:16. Business Cards, QR Codes and vCard files govx.socitm.gov.uk/.../business-cards-qr-... business card, QR code