Now Square just has to figure out a way to disrupt the market for ATM machines in "Cash Only" businesses. There are dozens of local business in Square's own Sa

Now Square just has to figure out a way to disrupt the market for ATM machines in "Cash Only" businesses. There are dozens of local business in Square's own San Francisco that, even given a novel payment solution like Square, refuse to accept credit cards and opt instead to host on-premise ATM machines.