San Francisco last week moved to ban cashless stores. This is a big news story receiving plenty of coverage, like this from CBS:
San Francisco is about to require brick-and-mortar stores to take cash as payment, joining Philadelphia and New Jersey in banning an increasingly popular store policy of snubbing cash. Critics say refusing cash payments harms low-income people and the homeless, who are less likely to have access to credit cards.
And this TV news report: