3 ms·

I don't see anyone scanning them here in Boston, but I have heard that in other parts of the world people do use them. They're supposed to be popular in Japan a

• kamjam 14y ago
  The only one that I heard of which "worked" is this one in South Korea. Pretty innovative really! http://www.innovationexcellence.com/blog/2012/10/29/koreas-emart-revives-sundial-in-the-age-of-qr-codes/ http://www.innovationexcellence.com/blog/2012/10/29/koreas-e...