This widget allow you to display your contact information (or other such as sms to, email to, note, MEcard and etc) in qr code form.
This widget works by displaying a qrcode which was defined by blogger to put contact information. Get qr contact information format from http://qrgenerator.mindster.net This web site allow you to generate most contact information format such as ME card,telephone number,url,wifi access code, send sms, send email and etc.