It's not just "kids", think bigger
Recent studies have shown that while only 6% of smartphone owners have scanned a QR Barcode, it's a 14 million customer market. The largest percentage of these customers is in the 18-34 age range.
A high percentage QR Code users have an average household income of over $100K. This percentage of customers have income now and are spending. In fact, the percentage of users with over $100K incomes is nearly double the US National Average. They may not be the "1%", but they have a huge untapped purchasing power.