The Verge:

a significant number of merchants, including heavyweights like Walmart, Kmart, 7-Eleven, and Best Buy, are in outright competition with Apple Pay. The retailers, through a joint venture formed in 2012, are building their own mobile payment app, called CurrentC. It’s expected to launch next year. In the meantime, these retailers have no intention to support Apple Pay.

There may be a lot of good reasons to not support Apple Pay and there may be good alternatives available now and in the future but CurrentC – which needs access to your checking account – and QR codes is not either of those things.