WOTC - Use of QR code

I asked this question in the Wisdom of the Crowd:

Are you familiar with the use of QR code?

Here are the responses: (35 Votes)

29 % - I have a QR code scanner installed in my mobile phone.
29 % - I use it occasionally
26 % - I do not know how to use a QR code scanner
17 % - I have seen other people use it.

See the pie chart at: 
http://www.wisdomofthecrowd.sg/chart.aspx?ID=924