Rachel Higbee

The retailer bought 1,600 new registers that reduce the number of keystrokes, said Rachel Higbee, director of operations.

The San Diego-based chain's goal is to never have more than three customers in line at its nearly 500 sites, she said.

Rachel Higbee, the director of operations, told Bloomberg that the chain's goal is to never have more than three customers in line at its nearly 500 sites.