I see one major problem: central payment processors. On my statement, the charge from, e.g. my local grocery store doesn't appear as from a particular store, i

I see one major problem: central payment processors. On my statement, the charge from, e.g. my local grocery store doesn't appear as from a particular store, it seems to come from some central corporate office. You'll also see this problem with things bought online, at certain big box stores or kiosks, and airlines/travel.